Spike ran excitedly through ponyville his mind focused on only one thing; Rarity and helping her in whatever way she needed. He paused at the door to check his scales and catch his breath before giving a polite knock on the door of the boutique.

“Coming” the refined voice of the mare of spikes dreams called; the door was enveloped by a soft blue glow as Rarity opened it, smiling brightly at the little dragon. “Hello Spike thank you ever so much for agreeing to help me out.” The unicorn leaned down and gave the dragon a quick nuzzle before gesturing for him to follow her in.

“I’m more than happy to help you Rarity!” He shouted then blushed walking inside his eyes straying to her rump every now and again.

“That is because you are a gentle stalli- er dragon Spike.” She praised leading him up the stairs. “Honestly if you hadn’t agreed I’d have been in a bit of trouble, this client wanted everything I made to be tested first.”

“Well I’m at your service my lady, so what am I trying on, a dashing cape? A classy hat and suit?” He asked glancing around the room.

Rarity paused  mid-trot looking over at the dragon in surprise. “Oh dear, I forgot to tell you before?”

“No you didn’t so tell me Rarity; I want to know how good I’ll look.”

Rarity blushed looking a tad nervous now. “Well you see spike, this client asked for something a bit more… how should I say unique.” She steps over to a pile of clothes folded at the side of the room and holds up what could only be a light blue onesie but sized for an adult pony.

“Um I’m not sure I’m the best one to help you with this after all Rarity.” Spike said his eyes shifting to the door then back to the unicorn.

“Oh Spikey I know this is strange, but I really do need your help, please you’re the only one I could ask,” She leaned her head down to Spikes level her bottom lip trembling ever so slightly. “Please Spikey-wikey for me?”

Spike hesitated for a moment before sighing. “Okay, but you never tell anyone about this”

Rarity squealed picking spike up and hugging him tight.” Oh I wouldn’t dream of it Spike and thank you so much, oh you are the sweetest dragon in all of Equestria.”

Spike just blushed but returned the hug feeling a bit better from his crushes praise.

“Now if you’ll be a dear and step onto the podium we can get started, I’ll just need a moment to resize these.” She giggled into her hoof. “They’re a bit too big at the moment.”

Spike stepped up slowly his cheeks warm. “Let’s just get this over with, and nothing too girly.” He gave a stomp of his foot wanting Rarity to know he was serious.

“Of course Spike, nothing to girly.” Not yet at least she thought to herself suppressing a small shudder at the thought of what she had in store.

Floating the onesie over she instructed the little dragon to be mindful of his claws as she had him step into leg holes before pulling it up and snapping the tail snaps then moving onto his arm. Spike did his best to move as told, taking some comfort in Rarity’s smile as the sound of the Zipper on the back let him know he was finished.

Spike moved around a bit surprised by how comfortable the onesie was. “This is really soft Rarity.” He smiled rubbing his fingers over the sleeves before looking up at the unicorn who had trotted back a few steps for a better view. To his surprise she was not smiling. “Why aren’t you smiling Rarity did I do something wrong?”

“Hmm…” Rarity said pacing around the dragon giving him a critical eye before answering. “Oh no Spike, it’s just something is missing.” She gave the dragon another once over before her eyes focused in on his waist where the fabric was looser than the rest.

“Of course! I forgot what goes underneath, stay right there Spike I’ll be back soon.” She then galloped out of the room and down the hall.

“O-ok” Spike barely had time to say sitting down on the podium and shifting back and forth a bit. “This isn’t too bad I guess.”

Down the hall in a special room Rarity was trying to catch her breath and keep from squeeing in delight. Things were going just as planed and it had her almost gitty in excitement.

“Now Rarity stay calm can’t seem too eager for what come next now can we.” She whispered to herself taking a few calming breaths as she floated over a small package.

Rarity returned with a triumphant smile, floating next to her was a package of half empty filly diapers. “I’m glad forgot to throw these away when Sweetie Belle out grew her bedwetting.” She explained as her magic began removing the onesie off the baby dragon.

Spikes eyes widened at the sight and he started turning for the door again even though he was being held in Rarity’s magic. “You didn’t say anything about wearing diapers!”

“Spikey you promised me you’d help.” Rarity reminded him putting a small whine into her voice. “And I already promised no one would know about this you, so you really have no need to be nervous.” Spike looked back at her uncertainly but Rarity smiled kindly. “I know how about you do this and I’ll give you a special gem treat for being such a great helper.” She bats her lashes for extra effect.

Spike blushed looking from the diaper to Rarity then back to the diaper before sighing, his shoulder slumping in defeat.

“Oh thank you Spikey now just hold still and I’ll take care of this.” Spike just nodded as Rarity floated one of the diapers out a quick bit of magic giving the tail hole the extra space need for the dragons larger tail, before wrapping it around spike the front displaying smiling sun along the crotch

Unable to hold back any longer Rarity squealed in delight quickly putting the onesie on spike. “Ohhh you look simply darling like this Spike!”

Spike tried to make his way back to the podium but the bulk between his legs caused him to slip and fall with a loud crinkle. “This is so embarrassing.”

Rarity giggled behind her hoof. “Oh come now it can’t be that bad, and you are just so adorable, oh can you try crawling on all fours for me spike I want to be sure the fabric doesn’t bunch up in the wrong place. Let me know if it does and I’ll get the next one ready.” She turns away fanning herself just a bit as she gets the next outfit ready with her magic.

Spike nodded taking his eyes of the unicorn’s backside to crawl around was surprised to find it was actually enjoyable. The diaper and onesie hugging him close. It’s like I’m really a baby dragon again he thought absently.

Rarity turned back around and felt warmth gathering within her. “Oh Spike just look at you, you are the cutest little dragon, I could just eat you up” She cooed. “But first more outfits.”

With a bit of magic she pulls the onesie away folding it up and holding up a little sailor suit. “I think you can put this one on yourself.” She teases.

“Of course I can!” He waddles up quickly taking the shirt and slipping it on, then tries the pants only to find they are much too small to cover the diaper.

“Oh dear guess I resized those too much.” Rarity says taking the shorts and turning sharply letting her tail brush along spikes face and giving a glimpse of her slit as she makes her way to the sewing machine, giving her hips just a little more sway.

Spike stares into the empty space his mind focused on that brief glimpse of the unicorn’s privates causing his little dragon to swell within his diaper.

“Oh Spike you just have to pose for me” Rarity coos from her sewing machine, smirking for a moment at the far off look on the dragons face.

“What kind of poses Rarity?”

“Oh anything you like dear, anything you do will be simply wonderful.” She smiles floating out a camera and snapping a photo as spike waddled back up the podium.

Hearing the snap, spike turns and his ear fins wilt in embarrassment, “Rarity that’s too much.” He whines softly trying in vain to cover the padding between his legs, blushing as his fumbling rubs the soft material against his slight arousal.

“Oh Spike it’s really not a big deal, I’ll be the only one to see these I promise you.” Rarity smiles unable to help the purr that entered her voice at the end.

Spike let out a soft whimper but slowly nodded feeling a bit better as Rarity’s face lit up in glee. He began doing pose after pose for the unicorn but soon a new problem was making its self-know. He needed to pee.

“Rarity can we take a bathroom break?” He asked nervously squeezing his legs together doing the potty dance much to Rarity’s enjoyment.

“Oh you can hold it a little longer I’m sure, just a few more poses please” She batted her eyelashes as the camera snapped away catching each strained expression on the dragon face.

“O-ok but hurry please.” He whined doing his best to hold on and do each pose as Rarity ask until it was too much, with a soft whine he feels the first drips escape that soon turn into a stream. His cheeks felt like they were on fire as he prayed that somehow the lovely unicorn wouldn’t notice. To his greater shame as the stream tapered off his dragon-hood was responding to the warmth surrounding it and growing more towards full mast.

Rarity suppresses a smirk as her plan is successful carefully snapping pictures as the suns on the front of Spike’s diapers turn into rain drops as they are flooded.

“Spikey that last one was perfect we’re almost done, now can you turn around and look over your shoulder at me, oh and stick your butt out more.” She instructed.

“L-like this Rarity?” He asked feeling the weight shifting between his legs as he pushes his rump up and out.

“Mmm perfect, now pout for me, like when Twlight takes your ice cream away, and do lift your tail just a bit sweetie.”

Spike lifts my tail slightly and sticks out his lower lip looking back at Rarity his eyes pleading.

“Yes that’s it spike, hold it that pose!” She snaps a few pictures making sure that the wet diaper is clearly visible. The expression the dragons face making it seem like he was begging to be changed.

“So um rarity how much longer?” Spike asked trying not to move his legs much.

“Oh that should do it Spike, now you run off and change into a new diaper and I’ll ready the next outfit.” She smiled pulling the shirt off and giving his rump a swift smack with her magic producing a soft squish.

I’m sure this next outfit with be one you’ll just love Spikey-Wikey she thinks to herself as the little dragon scurried off to the bathroom ashamed that his accident had been noticed.

In the bathroom Spike couldn’t help looking down at the plastic and fluff around him, his claw giving the front a quick squeeze, prompting a gasp of pleasure from him as the padding squeezes the head of his peeking shaft. In a bit of a daze he squeezed a few more times.

“I could get use to this.” He mumbled softly feeling his dick stiffen further in the warm confines.

“Spike do hurry up, or do I need to come help you!” Rarity calls from the dressing room.

Rarity’s voice broke the dragon’s pleasure trance as he drew his hand away sharply. “N-no I can handle it!” He shouted back quickly pulling the diaper off and wiping his scales off with toilet paper, being careful with his now exposed cock head.

“I can’t believe I was doing that.” He thought carefully taping the new diaper onto himself. But it sure felt good a niggling voice in his head pointed out at he ran back to Rarity.

“I’m ready Rarity, what’s next?” He asked hoping the blush was gone from his cheeks.

“Why this lovely dress.” Rarity smiles holding out a short white dress with pink ruffles around the sleeves and bottom. “Just hold up your arms up for me dear.”

“A dress!” He shouts then blushes looking a Rarity his eyes pleading. “Please Rarity; do I really have to wear that?”

“Well the order was made by a mare Spikey.” She cooed running her hoof along his spines to calm him down. “And this is the second to last outfit I promise.” She leaned down speaking into his ear fins.

He shuffled back and forth uneasily his diaper crinkling loudly.

“How about that nice gem I promised you, a yummy diamond for my little helper?” She whispered floating a long slender diamond in front of the young dragon, its edges and top rounded to blunt head.

Spike shivered as her breath blew across his scales prompting a quick surge from his cock within his fluffy confines, and drool started to form at the sight of the diamond. Thought the shape was vaguely familiar to him. Still the teasing and the treat were enough to make him nod.

The dress floated down over him the hem just covering the top half of his diaper.

“That’s my sweet dragon, and here’s your reward.” Rarity whispered softly. “But try to savor this treat; after all I got it just for you.” She spun it lightly in the air so that the slender flat tip was an inch away from the dragon’s mouth. “That means no biting; only licking and sucking, like a lollypop.” She purred the warm feeling in her loins growing as Spike nods and letting the diamond slip between his lips.

Spike smiled as the taste of the diamond washed across his tongue as he began to suck a bit of drool escaping as he looked up at Rarity as she back up his eyes clouded.

“That’s it Spike just like that.” She sighed sliding the bit of diamond slowly in and out of the dragon mouth, snapping pictures all the while from many angles always insuring the diaper and the dragons face were in the frame.

“Oh Idea! Can you lie on your back and hold the diamond in your claws for me spike.” He nods lying back holding the diamond himself, slowly taking more of it into his mouth with each suck his face flush as each movement made the padding compress around his tiny cock.

“Wike this Wawity?” He lisps around the diamond looking up at her

“Yes just like that” Rarity whispers biting back a moan as her marehood winked at the sight of the diapered sissy dragon sucking a diamond cock. “That’s just perfect.”

Spike let out a breath as he caught sight of Rarity’s damp slit when she turned around. The smell of her arousal reaching his nose, causing his cock to spurt a bit of pre-cum into his padding.

“Shall we put on the last outfit Spike? Than you can really enjoy your diamond.” She smirked glancing back and noticing where he was looking. Her magic slowly drawing the shaft from the dragon’s mouth tracing the blunt head across his lips.

“Wha-what’s the next one Rarity?” spike panted softly, his tongue flicking out to lick at the retreating diamond with a soft whine.

Rarity helped spike back to his feet and removed the dressed stowing it away at the bottom of the bag Spike had brought with him. A surprise for later she smirked.

The dress taken care off she held up a white blouse the sleeves frilled along with a red mini-skirt. “Do you like it darling?” she asks brushing the diamond along his cheeks leaving wet trails in its wake.

“Th-the skirt looks a bit small.” Spike whimpered feeling the saliva travel down his cheeks making them burn. “Let’s just get this over with.”

“Now Spikey that wasn’t very nice.” She scolds floating the diamond to the clothes. “I think you should ask me nicely to wear this little outfit.” She tut’s. “That is if you want your treat.”

“But” Her firm gaze quickly stifles his protest. “Okay Rarity, I’m sorry, can I please wear that outfit?

“Which outfit do you mean my little spikey?” Rarity teased.

“The blouse and skirt, I want to wear them please.” He whispered his cheeks and ear fins burning in shame and arousal thought he couldn’t understand why.

“Of course Spikey, all you had to do was ask, now hold up your arm.” She cooed sidling up behind the dragon. Rarity used her hooves to move his arm into the sleeve and then the other buttoning the front slowly, letting her magic tease the diamond tip back between the dragon’s lips. “Such a good dragon, now get on all fours for me darling”

Spike blushed his tongue wrapping around the diamond and his lips trying to pull more of it into his mouth as he slowly sank to his knees lifting his butt into the air toward the unicorn.

“Now lift one leg at a time.” She coed stroking a hoof across his padded rump letting out an approving sound as the dragon obeyed lifting his right leg.

Appling a bit of pressure with her magic she aided spike in taking the diamond deeper into his mouth hearing him groan as the skirt slipped over his tail and one leg. “Now the other.”

Spike complied gagging slightly as almost half the diamond presses into his mouth.

Rarity eases it back for a moment before pressing it forward again. “You can do it spikey you’ve almost reach the middle ring.” She praised using her hooves to tug the skirt into place making sure to carefully brush the front of his diaper confirming that the dragon was fully aroused inside his diaper. She rewarded this fact with just a few accidental strokes of her hooves

My little sissy dragon enjoying this more then I’d hoped she thinks gleefully

Spike moaned around the diamond hoping that Rarity didn’t notice his hard nub within the diaper as his hips softly thrust forward. Half the diamond cock vanishing into his mouth by now. His jaw was feeling sore but he was unable to stop himself.

“Oh Spike you’re quite the sight but something’s still missing… close your eyes for me will you?” She asked her voice a bit husky as she left spike to his own devices for a moment sending a tendril of magic into his diaper causing the padding to gently compress around the tip of his penis encouraging the dragon to keep thrusting his hips and squeeze his legs together.

Spike didn’t even pause merely closing his eyes, to overcome to think it odd. More pre-cum escaped into his diaper every time he thrust, each splash making each thrust feel all the better coaxing moans around the diamond he was suckling.

Rarity shuttered in pleasure at the site as she gathered some fake lashes and eye shadow applying both to spike in just the right amounts to turn his looks from boyish to feminine. “hmm yes almost there just a few more touches.” She coos increasing the magic in his diaper.

“R-R-Rarity can I open my eyes yet?” Spike moaned.

“Not just yet darling but soon.” Rarity assured him applying a bit of blush to his cheeks. “Sweetie can you let the diamond go for just a moment I promise to give it right back.”

Whimpering and squirming in his growing pleasure spike relaxed his jaw allowing the diamond to be removed with a lewd pop.

“My goodness Spike you certainly have a talented mouth, taking half the diamond without a single bite marks, I’m very proud of you.” She praised stroking his scales while applying some lipstick to his damp lips her magic pumping the wet fluff around his penis in earnest.

“C-can I l-look now Rarity please?” Spike begged his member was pulsing and he felt like he was going to explode.

“One moment more darling, here’s your treat back.” She whispers sliding the diamond back into his eager mouth which he took with gusto. Trotting behind him, she brought one of her full length mirrors over and got the camera ready. This will be the best ones yet she thought eagerly her own juices sliding down her legs but she didn’t care.

“Now spike sit up on your knees and spread your legs nice and wide.” Spike did though he whimpered unable to stop his hips from rocking.

“Now open your eyes little Spikey I know you’ll love what you see.”

Spike open his eyes slowly his eyes widening as he beheld the sexy little dragoness in front of him, dressed in a school filly uniform and diaper and sucking a diamond cock.

Rarity took her first picture then, followed by a second as his expression turned to shock as he realized that the girl dragon was him.

With a cry the diamond dildo feel from his lips as his hands clenched the front of his diaper and he came hard into the padding. Moaning as he fired spurt after spurt of seed darkening the diaper to the point that the suns began to change to raindrops. The entire time Rarity kept snapping away with her camera catching each expression of pleasure on the dragons face.

Rarity smiled setting the camera down as spike began to stop shaking. Coming up behind the dragon she placed her hooves around his waist nuzzling his head and stroking the damp front gently. “That was wonderful Spikey-wikey, did my little dragon make another westie in his diapee?” She cooed into in ear fins.

Spike blushed hard in shame as he stared at the diamond on the ground feeling a heat on his back. “Y-yes Rarity.”

Rarity floated the diamond up her smile growing as Spike’s mouth open to accept it on autopilot but only teasing his lower lip. Her horn glowing brighter as she casts one final spell. “There is one more thing I need you help with Spikey. Would you like to help me just one more time?” she asked leaning back just a bit.

“H-how can I help?” Spike asked turning to look at her before quickly looking down as he felt something hard and throbbing against his back and tail. Rarity gave a small thrust of her hips causing her new cock to bounce against the little dragon.

“I have a diamond that needs shining Spikey and you’re just the dragon to do it.” She smirked floating the diamond over to hover next to her cock so Spike could see they matched. “You already have some practice after all.”

Spike blushed feeling his cock growing hard all over again as he dropped to his knees and began to nuzzles and kiss Rarity’s shaft.

Rarity let out a happy moan rubbing his spines. “Oh Spike that’s a good girl.” She moved the diamond so the tip rubbed up and down his diaper making it crinkle. “Lift your little butt up for me.”

Spike grunted softly raising sitting on his knees and taking the first inch of Rarity into his mouth, showing just as much care as he did for the diamond. It tastes even better than the diamond, he thought, the thought prompting a shot of pre-cum.

Rarity grunted in pleasure enjoying the dragon’s hot wet mouth engulfing her, as her magic tugged his diaper down enough to press the diamond against his butt hole. “I hope you’re ready to wet your diaper again Spike.”

Spike shivered his hole twitching as it was slowly spread open, causing a spurt of pre-cum to jet into his already damp padding.

Rarity took her time sliding the diamond in slowly in and out at a measured pace, while doing the same with the dragons mouth feeling the dragons lips brushing her medial ring. “Yes spikey please your stallion!” She moaned

Spike groaned around her shaft lifting his hands up to stroke the rest of Rarity’s shaft eagerly bobbing his head faster, his tail hole sucking in the diamond with the same fever.

“Oh yes Spike I’m so close!” Rarity cried speeding her thrusts in both holes Spike crying up in surprised pleasure as the diamond brushed his prostate.

Spike shivered feeling like he was about to explode into his diapers again, his ass clenching rhythmically; while his mouth serviced Rarity’s meat with all his might.

With a loud whinny Rarity held spike in place as she began to flood his mouth with cum, her magic drilling the diamond back and forth with each surge of pleasure. “Drink it all Spikey, Drink it all!”

Spike swallowed drinking all of the mare’s seed even as his eyes roll back as he came again into his diaper, even harder than before completely soaking the front and causing it to visibly sag.

Rarity whinnied softly her body shuddering releasing a few more few more spurts into the dragon’s mouth as she went limp. “Spike that was divine” She purred pulling the diamond out slowly and lifting the diaper back into place.

Spike panted his eye closed as he gave a final swallow his stomach feeling full and warm from his meal.

Rarity patted his head as the dragon licked his lips. “Did you make another wetsie in you diapee Spikey?” Rarity teased rolling the little dragon onto his back smirking at the obvious sag in the diaper as her penis faded away.

Spike nodded his blush back as he felt the diaper squish around him, the sticky feeling inside his diaper impossible to ignore.

“Good girl, Rarity is very proud of you.” She praised floating a ruby into his claws. “You were a great help to me today Spike.”

Spike ate the ruby slowly still able to taste Rarity’s cum as he swallowed the gem treat. “Hey um Rarity, do… do you think we could do this again sometime? Since it is just between us and all.” He asked nervously.

Rarity hugged the dragon. “But of course my little Spikey, but I think you deserve a few mementos for being such a great assistant.” She floated three of the filly diapers into his bag along with the diamond dildo making sure Spike was watching. “I’ll even let you keep the outfit.”

Spike blushed but smiled returning the hug. “Thank you Rarity.”

“Think nothing of it Spike, now you best get back to Twilight, I’m sure I’ve kept you longer then she expected.” She gave the dragon a little nudge guiding him out of the room and toward the stairs.

“Oh your right just let me change first.” He said reaching for the tapes on his diaper, only for Rarity to place a hoof over them causing him to look back at her.

“Did I say change before you left Spikey? You should know better by now.” She moved his hands away, inwardly happy when the dragon put up only token resistance.

“But other poines might see me.” He whimpered his shame and embarrassment returning.

“You’ll just have to be careful then won’t you? Or I could see if rainbow could give you a ride, I’m sure she can get you there fast.” She teased enjoying the look of horror on the dragon’s face.

“Nononon!” Spike shook his head waddling to the front door. “I’ll… I’ll walk” He whispers. “S-see you later Rarity.”

“Have a good day Spikey, and thank you again.” She smiled brightly floating his backpack over before he could forget it.

Spike smiled a little back opening the door a crack and looking around. Coast clear, giving one last glance to the skirt and cum filled diaper around his waist, he made a run for the nearest bush eager to get back to the library.

Next Chapter: Robin Estimated time remaining: 13 Hours, 7 Minutes