"I can't believe I'm doing this," Gilda grumbled as they made their way up to the house.

"It's just a sleep-over," Twilight said. "Like when you were younger." Moving closer, she leaned in against the taller girl.

Gilda wrapped her arm around Twilight, palm on her hips and fingers resting against the skirt over the smaller girl's bottom.

"I didn't have sleep-overs when I was younger." Her eyes narrowed as she gave a predatory smirk. "I wasn't exactly what you would call 'friendly' when I was that around that age." The smirk vanished. "There was a lot of anger and need to prove myself back then."

"Well I'm glad you grew out of it," Twilight said, leaning up to kiss Gilda on the cheek. She then got a smirk of her own. "Too bad, though. Topless pillow fighting and practicing making out sounds just like the kind of things you would enjoy."

That caused Gilda to stop, turning to give the other girl with a skeptical look.

"That doesn't happen."

"How would you know?" Twilight asked. She suddenly pulled away from Gilda and ran up to the door, ringing the bell.

The door opened to reveal Pinkie Pie and...

Gilda stared, trying to process what she was seeing. Standing slightly behind Pinkie was a girl that looked a lot like Twilight. Similar height, similar skin and hair color, similar clothing styles. The most noticeable differences was that the other girl had her hair down and was not wearing glasses.

The other girl pushed past Pinkie and came over, offering a smile.

"You must be Gilda. I'm Princess Twilight Sparkle from Equestria."

"Oh. Right. Yeah."

Twilight -- Gilda's Twilight -- and Rainbow Dash had told her about the whole mirror to another world and pony counterparts thing, but there was a big difference between hearing something and actually seeing it. She had never thought that they were lying when they told her about it, but it was still a massive shock to see this other person that looked so much like Twilight.

"Glad you could make it," Pinkie said from the door. "Come on in." Her grin grew wider. "And wait until you see what's happening later."

That... that was not ominous... was it?

This world's Twilight Sparkle took a hold of Gilda's hand and led her inside.

"Just call me Sci-Twi, and her Princess," she said. "Helps keep it clear which one you're talking to."

"Seriously?" Gilda asked raising an eyebrow. "Sci-Twi and Princess? It sounds like the name of a bad kids show."

"You mean a great one!" Pinkie declared as they came inside and headed... somewhere. "A princess from a magical world comes to another dimension, and meets a smart scientific girl and moves in with her. Every episode, the smart girl explains something to the princess, teaching her something about science and the world, helping kids in the audience learn about it as well. It could help kids learn about science, math, and nature, and show little girls that they can be all sorts of things when they grow up. Then it can be bought out by a big studio and transferred to a paying cable network, where they will give it a big budget, but get rid of the educational stuff and original cast. All that will remain is a hollow shell of what it was, with no one watching, and the studio executives never realizing it was their own fault that a once great show ended up being forgotten."

A ding suddenly filled the air.

"Oh, pizza's ready," Pinkie called back as she took off to the kitchen.

Gilda and the Twilight's were in the living room, where the rest of the girls were waiting. Rainbow Dash grinned at their arrival, getting up from her spot and walking over.

"Yo, G!" she called out. "Glad you could make it." She held out a fist.

"The girl can get pretty stubborn," Gilda said as she bumped Dash's fist with her own. "She's right though, could use a little time with some others." She smirked. "And you're not the biggest losers I've met."

"Aww," Rainbow said. "Sounds like someone's getting soft in their old age." She then gave a playful jab at Gilda, hitting her in the ribs.

Gilda let out a grunt and grimaced as she was jabbed right in the sensitive spot, still tender and bruised from her crash.

"Oh shit," Rainbow cried out as she realized what she did. "I'm sorry, G. I forgot about that."

"It's fine," Gilda assured her. "Don't worry about it."

Not long after, Pinkie Pie returned with two others following her and the three of them carrying pizzas.

"We have cheese, pepperoni, veggie, the one I call 'The Whole Hog' -- which has pepperoni, sausage, regular bacon and canadian bacon -- aaaand... The Atomic...Infernooooooooo..."

Curious, Gilda reached out to grab a slice of "The Atomic Inferno."

"I wouldn't do that," Sunset Shimmer said. "If Pinkie Pie is calling something 'The Atomic Inferno,' it will probably burn your mouth pretty bad."

"Maybe even literally," Princess Twilight added.

"Not literally," Pinkie assured with a smile. "I already learned my lesson about that. It is really hot though. I even mixed ghost peppers into the sauce." She waggled her fingers. "Ooooooo. Hot, and you'll never see it coming."

Rolling her eyes, Gilda went ahead and grabbed the slice anyways. She was not big on hot and spicy food, but she could handle it pretty well. Also, she had not tried ghost peppers before, but how bad could they be?

Turned out, pretty bad. One bite, and she found herself downing a half-gallon jug of chocolate milk. Her tongue and throat felt like they were literally on fire. It really hurt, and was pretty much all she could feel. Tears ran from her eyes, and if her nose was not running already, it probably would be soon. If someone said she was sweating, she would not have been surprised.

After that, only Pinkie and one of her sisters -- introduced and Maud and Marble -- were brave enough to eat The Atomic Inferno, with Pinkie being the only one that seemed to have no problem eating it. Although, Applejack and Rainbow Dash did start playing a fighting game, where the two would play until one of them got ten wins, and the loser had to take a bite of the pizza.

It looked like it was going to be a very long fight.

Gilda turned her attention to Princess Twilight, who was currently staring at a slice of The Whole Hog, eyes narrowed as she poked at one of the pepperoni pieces.

"So, Princess," Gilda said. "You come from a world of magical ponies, and all your friends here have pony versions there, right?"

"For the most part, yes," Princess Twilight answered.

"Any chance you've met a pony version of me?" Gilda asked, raising an eye brow. It was something a part of her had been wondering about. She had not found out about all the types of ponies there were, but after hearing about Rainbow's counter-part being a flying kind, she was not surprised, but curious about her own.

Princess Twilight took a bite before answering.

"Not a pony, no," she said. "I did meet your counter-part, though. She was a griffon, part bald-eagle and part lion, specifically."

"A griffon," Gilda repeated as she considered it. She would have big wings, and sharp claws.

"I could see it," Sci-Twi said, looking at her with narrowed eyes as she studied Gilda. "Strong, predatory, territorial. It seems like a good fit."

Gilda's own eyes narrowed as a grin spread across her face. Getting up, she stalked toward her girlfriend, trying to look as much like a predatory feline as she could manage. Gilda could see the blush forming as she approached, Sci-Twi's purple eyes watching her.

Just as she was about to reach her "prey," a pair of surprisingly strong pink arms wrapped around Gilda, pulling her away.

"It's almost time for Limey's date," Pinkie announced. "You guys get everything ready for our little game while I take Gilda to meet Limey's new girlfriend."

"Why would I--" Gilda started.

"Trust me," Pinkie cut in. "You do not want to miss this."

Next thing Gilda knew, she was standing at the front door with Pinkie Pie holding her there. Pinkie held up three fingers.

"Three," she counted down. "Two... one..." She pointed.

There was a knock at the door.

"Answer it," Pinkie said as she gave Gilda a small shove forward. "Trust me."

Gilda gave a scowl. In her experience, the people who told you to trust them were normally the ones that could not be trusted, and usually said something like that to a person just before screwing them over.

This was not most people, though. This was one of Twilight's friends. She trusted Twilight, and Twilight trusted her friends. Yeah, the girl might have been naive, but she was not stupid. Then there was Rainbow Dash. Girl may not be as smart as Twilight, but she was a bit better at knowing how people were. So if they trusted Pinkie, then Gilda would give her the benefit of the doubt.

Taking a hold of the knob, she opened the door.

Standing on the other side was the familiar scowling face of a dark pinkish girl with purple and green streaked hair in a pair of pigtails. The scowl shifted as the girl's brows furrowed.

"Gilda?" Aria Blaze asked. "What are you doing here?"

"I could ask you the same," Gilda said, crossing her arms as she smirked.

Aria crossed her own arms and scowled deeper.

"I'm just here to pick up her sister," she stated, nodding toward Pinkie. "She's not the dumbest person I've met, and isn't a completely lame goody two-shoes or whatever."

"I'm writing a song about them," Pinkie whispered. "I'm calling it...'Tsundere Love.'"

Aria's pink face grew brighter as she glared at Pinkie, who was smiling and humming, oblivious to the murder eye she was getting. Gilda's lips pressed tight as she smirked, biting back a snicker at the other girl's expense.

"So what are you doing here?" Aria asked as she returned her attention to Gilda.

"You remember that pony princess that helped kick your scaly butts?" Gilda asked, watching Aria tense with anger in response. "Well, I'm dating her human counter-part from this world, and she insisted I come with her to this sleep-over."

"Speaking of," Pinkie said. Turning around, she shouted toward the living room. "READY YET?!"

"Almost!" Rarity called back. "Just another minute or so."

"So you're dating some know it all goody two-shoes?" Aria asked, eyes narrowing. "What, did she lose a bet? Feel sorry for you after seeing me kick your ass at the fight club?" Her lips pulled into a sneer. "Or maybe she wanted to know what it was like to date street trash."

Anger started burning in Gilda's chest. Her jaw clenched as she tried to hold the frustration back. Her hands shook as they clenched into fists, fingernails digging into her palms. She wanted to hit Aria. NO! She wanted to attack her. Tackle the bitch into the ground and slam her head into the pavement until blood started pouring out. Maybe break her nose. Or her jaw. Or...

A soft hand touched her shoulder. Turning, Gilda found Pinkie there, looking at her with worry.

"For fuck's sake, Aria," a raspy voice called out. "Can't you be around people for five minutes without being a complete asshole?"

Joining them was a dark gray skinned with light gray hair. Her green eyes were narrowed into a glare, and her face looked like it was stuck in a permanent scowl.

How the fuck is this girl related to that one? Gilda wondered, looking from the new arrival to Pinkie Pie.

"Being an asshole is an all or nothing thing," Aria declared. "If you're going to be one, might as well be a massive one, or else fuck off, Limestone."

Limestone rolled her eyes and let out a snort.

"Whatever, bitch!" She walked toward the door. "Come on. I don't have all night to wait on your dumb ass."

"First off all," Aria called out as she started following after the other girl, "you're the bitch, not me."

"You keep telling yourself that."

"And second of all, I was waiting on your lazy ass to get ready."

This continued on as the two of them walked down the driveway and to the sidewalk. Practically every sentence they used seemed to be based around insulting each other in one way or another.

"I know it seems weird," Pinkie said, "but I think they actually make each other happy in a weird way."

Probably because no one else could put up with them, Gilda thought. Anyone else would probably be trying to figure out where to hide the body after the first date.

Pinkie shut the door and stepped in front of it, facing Gilda.

"Do you want to talk about--"

"No," Gilda cut in. "I don't." She crossed her arms. "Not now. Not ever."

Stepping closer, Pinkie put her hands behind her back as she practically pressed against Gilda, a big smile on her face.

"Well, if we were to talk about it, I would assure that -- even though you know Aria only said that to get a reaction -- Twilight definitely doesn't see you like that." Pinkie's smile shrank, but seemed more sincere. "I mean yeah, she does like your body, and I don't blame her, but it's not why she's dating you. It's because she sees someone who cares for people, and can be really kind and is really protective of those she cares about. Plus, you seem to really like her for who she is."

Pinkie suddenly took a step away and turned around.

"That's what I would say if we were talking about it, anyways," she declared. "But since we're not talking about it, I'll instead say that the dessert pizza's ready and offer you the first slice."

It turned out that the "dessert pizza" was a giant cookie, with a raspberry sauce, cream cheese frosting, and gummy candies for "toppings." It was way too sweet for her liking.

So this is what diabetes taste like.

Still, between the sugar rush and Pinkie's words, Gilda was not as mad at Aria as she had been. She still wanted to punch that stupid smug look off her face, but was willing to let her live with a broken jaw and nose. Maybe a pair of black eyes.

As she ate the "slice" of "pizza," Pinkie led her back to the living room. Stopping just before entering, she turned around to face Gilda, pulling a toy microphone from... somewhere... It looked like it was her hair?

"And now," Pinkie Pie said in a perfect television announcer voice, "are you ready for the game to begin?"

"Game?" Gilda asked, raising an eyebrow. "What game?"

Pinkie stepped into the room and turned, flourishing one hand to point to the center of the room.

There stood both Twilight Sparkles. They were side by side, facing forward with their hands behind their backs. Both were dressed in identical pajamas: light pink outfits with black and white yin-yang symbols printed on them. Neither of them were wearing glasses, nor did they have their hair tied up.

"Welcome to..." Pinkie started.

"Guess! Your! Twilight!" the rest of the girls chanted together.

"That's right," Pinkie continued. Stepping further into the room, she turned to Gilda and lifted a hand toward the pair. "Here we have two people, both named Twilight Sparkle. One is an pony princess visiting from another world, and has helped save the world from brainwashed armies on two separate occasions. The other is a human from our world, a scientific genius, and your girlfriend."

She then pointed at Gilda.

"Your job is to..."

Several seconds passed in silence. Pinkie turned to the "audience" and gave a small pout.

"Guys!" she whined. "That was your cue."

"Sorry," Sunset said. "Set us up again. We'll get it this time."

"Okay," Pinkie said. Turning back to Gilda, she once more pointed at the girl. "Your job is to..."

"Guess! Your! Twilight!" the "audience" chanted again.

"That's better," Pinkie said before going back to her announcer mode. "However, they can't talk, so you can't ask any questions that only Sci-Twi could answer. Are you ready?"

Gilda gave a shrug.

"I guess so."

"Alright then. Go ahead and try to..."

"Guess! Your! Twilight!"

After rolling her eyes, Gilda walked toward the pair of Twilights. They did look exactly alike from where she stood. But one was a being from a world full of magic and ponies (and griffons, it turns out), and the other was a high school girl that probably should have her college degree already. She had been dating that girl for a couple months now, so she could probably think of some things that would help figure out which one is her little egg-head.

Like the glasses.

Twilight -- her Twilight -- wore her glasses all day every day for years. It probably left some sort of impression on the side of her nose where it rested. Princess Twilight, however, never wears glasses, so she would not have any such thing. So, if she got in close and looked at their noses, she could tell which was which.

It was an idea that she would keep in mind if nothing else came to her.

Gilda moved to circle around the two, studying them and trying to figure out another way to tell the difference. Her gaze drifted over their bodies, trying to take in as much as possible and find things that were different between the two.

Her searching stopped as she caught sight of their hands. More specifically, what the two were doing with them. Both had their hands behind their back, but one was gripping at her fingers of one hand with the other, pulling on them. The other had her fingers curled up. Not quite in fist though. Just until the fingertips were pressing against the top of the palm.
A thought suddenly came to Gilda, causing her to smirk.

"Maybe I should spank them both and see which one neighs," she joked.

Both Twilights tensed at suggestion, with one of them bringing her hands down to protectively cover her butt.

Gilda was pretty certain which Twilight Sparkle was hers, but no reason to end the game just yet. Instead, she continued to circle around the two, stopping in front of them. Reaching down, she took a hold of her shirt and pulled it up off her. Gilda exposed her toned abs and the large bruise on her side as she took it off, leaving her in a bra. After dropping the shirt onto the floor, Gilda walked closer to the two Twilights. She then lifted her arms and flexed, tensing the muscles in her arms and torso.

"Oh my," someone in "the audience" squeaked out.

A blush formed on the faces of both the Twilights, but -- surprisingly -- neither of them looked away. Instead, one of them was looking at her with narrowed eyes, looking at the presented arm with curiosity. The other, however, was staring wide-eyed, and was nearly drooling.

Stepping over, Gilda wrapped her arm around that Twilight and pulled her close, pressing their bodies against each other. As she did, Gilda took a close look at Twilight's face, catching sight of a pair of small dents on the side of her nose.

"This one," Gilda declared with a grin. "This Twilight is my girlfriend."

"Right," Sci-Twi said, leaning up to kiss Gilda on the lips.

"Aw, man," Rainbow Dash grumbled. "Next time, we should add a rule against flexing."

Author's Notes:

First, if anyone wants to write Limestone and Aria dating in a very mean way, go for it. In fact, please do. I actually had an idea of them meeting in the street, yelling and insulting each other, then Pinkie Pie finding them in bed together and taking a picture. Unfortunately, I don't think I can do the proper insults and negative attitude for a full story.

Second, the "Pick the Sparkle" game was inspired by Jetto's Magical Girl Sunny (link) where he did similar in Kaleid Liner Prisma Sunny with Sunset Shimmers, Coco, and Sci-Twi.