The Carousel Boutique was silent, except for the ZzzzzZzzzzZ of Rarity’s sowing machine. She was making a dress for a very important client. She carefully stitched two pieces of fabric together, and attached several sapphires to the side. Sweetie Belle was upstairs coloring with the other two Cutie Mark Crusaders. Rarity was sweating; there was no way she could get this dress done in time! Suddenly, Twilight Sparkle walked in.

“Hi Rarity. How are you today?" she asked. She was being suspiciously welcoming...

"He- Hello Twilight. I'm sorry I can't talk right now. I have to get this dress done." Rarity said.

"Would you mind doing me an itsy-bitsy little favor?" she said with a big smile.

"Ugh. What is it now?" Rarity said, knowing that Twilight was going to want her to do something long and tedious for her.

"Well... I was working on a new spell and I was wondering if you could be my, err, guinea pig."

Rarity looked at the clock. "No, Twilight. I have to get this order done!"

"No no no. It's going to help you a lot!" Twilight assured her.

"Well, what does it do?"

"It will, in fact, increase your productivity by three times!"

Rarity looked at Twilight nervously. "Are you sure it'll work?"

"It can't hurt to try... right?"

"Okay... Are you entirely sure? I mean, really have to get this done."

"Oh you'll be fine!"

"Err, okay. Fire away."

Twilight Sparkle lit up her horn and pointed it at Rarity. Sparks flew and Rarity began to glow. She was lifted up into the air and exploded into light. Twilight stopped and dropped Rarity onto her face.

"Ahhh! My face!" she screamed as she got up.

"Oh, I'm so sorry Rarity." Twilight said.

"Did it work?"

"I'm not sure. Start sowing again and we'll see."

So Rarity continued on the dress, but she wasn't going any faster.

"Oh. That's a shame. I guess I'll have to keep working on it." Twilight said as she left.

"Hmm... That should have worked." she thought to herself. She stopped walking when she heard a horrible scream coming from behind her. She ran back inside Rarity's house. "Rarity!" she yelled.

She looked at her, confused and shocked. Rarity looked fine, except something was different... She was bigger! She was at least twice as big as normal.

"Ra- Rarity? Wha-" Twilight stuttered.

"What have you done to me?!" Rarity cried.

"Now now, err. Don't panic. I'll fix you. Now, umm, let's see. I'll try this."

Once again, she cast a spell on Rarity. She really hoped this would work. Once the spell was completed, she dropped Rarity down again. She didn't shrink again. Instead, she just grew again! She got bigger and bigger and bigger, until the Carousel Boutique exploded apart. But Rarity just kept getting bigger.

The Cutie Mark Crusaders screamed as they ran down what remained of the stairs.

"What happened to Rarity?" Sweetie Belle asked Twilight.

"I cast a spell on her to help her do her work, but it went wrong! And now she won't stop growing!"

Eventually, Rarity stopped. She screamed at the sight of herself. She was huge. At least five times her normal size. She crouched down towards Twilight.

"Twilight! Help me!" she cried.

"Umm... I don't know how."

"You have to help me!" she said.

The citizens of Ponyville were confused. They started panicking when they saw giant Rarity. "Ahhh!! A giant!" one of them screamed.

"It's a monster!" another one yelled.

"No no! I'm not a monster. It's me Rarity." she pleaded.

"You're not Rarity! Rarity isn't a giant!"

Twilight saw Rainbow Dash standing in the street; her mouth was open in awe.

"Rainbow Dash!" she said. "Fly up there and tell them that she's not a monster!"

"Oh no no no. No." she replied. "If there's one thing that my parents taught me, is to never trust a giant, no matter who they are."

"Your parents really said that?" Twilight said in disbelief.

"Well, it was something like that." Rainbow Dash said as she thought to herself.

"Well, it's Rarity. She's not evil."

"I'm not taking any chances. Come on ponies!" she yelled. "Let's show this monster what we've got!"

"Yeah!" they all yelled, and charged at Rarity and started attacking her ankles.

"Hey, get off me! It's just me!" Rarity yelled, but they didn't listen. So Rarity shook them off and galloped away crying. Twilight followed her, but had trouble keeping up.

“Rarity, wait!”