A Filly in Charge [COMM]

Commission for

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Rarity’s life had quickly taken a turn for the worse. She had been making her next line of dresses in her home, the Carousel Boutique, when suddenly she noticed something. There was a rather large number of insects crawling around in a corner of the room. This, of course, would’ve been enough to make her scream, but she very nearly fainted when she noticed where the bugs had come from.

There was a crack in the wall of this room, and there were insects pouring in through the crack in vast amounts. With the loudest, most high-pitched shriek a mare of Rarity’s stature could manage, she ran out of her home as quickly as possible. After a call to a local exterminator to make sure her house could be rid of these creatures, Rarity calmed down a bit, but she knew she would have to find somewhere else to live in the meantime. And that’s where her spiral into her current situation began…

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It had been a couple days since Rarity had been forced into living with her parents once more. She hadn’t been in this house in quite some time, but now here she was, being made to live with them once more. Of course, her sister, Sweetie Belle, had been very excited to have Rarity living with them once more, and Rarity would admit it was nice to spend more time around her younger sister, but she would’ve much preferred to be able to live in her own home. Admittedly, living with her parents wasn’t too bad, but then came a day that made her wish she had just chosen to live at one of her friend’s houses instead.

One day, her parents were in a rush to leave the house. This was no big deal, as they usually left this house in a fervor, and usually left Rarity in charge, since she was the only other adult in the house. However, today, they seemed to be especially scatterbrained.

As the two of them rushed to leave the house, Sweetie Belle tailed close behind, bouncing excitedly. “Can I be in charge today? Huh? Can I? Can I? Can I?” She asked, as she did every day. Normally, Sweetie Belle would be turned down almost instantly, but since her parents were in such a big rush today, they just said the first thing they could think of to make Sweetie Belle happy.

“Yeah, yeah, sure, you’re in charge today. Now, we really gotta go!” Her mom responded as the two adults ran out of the house to go attend to their business. Sweetie Belle squealed in excitement, and immediately ran to tell her sister the “good news”.

“Rarity! Mom said I’m in charge today!” She yelled as she ran into the room Rarity was staying in. Rarity’s only response was to look at Sweetie Belle with a rather confused look. Why would their mom put a child in charge…?

“Well, that’s rather odd. Usually I’m the one put in charge, seeing as how I’m the adult. For that matter, you won’t even be here all day! Don’t you have school today, Sweetie Belle?” Rarity asked. In response, Sweetie Belle nodded, but still saw no problem in this.

“Yup! But I also had a plan to try and get my cutie mark today! And since I’m the one in charge, you’re gonna help me out with it!” She said with a big smile on her face. This worried Rarity a bit, as she knew her sister could get a bit… eccentric when she was in the pursuit of her cutie mark.

“Alright…” Rarity said, deciding to just go with whatever Sweetie Belle said for now. If push came to shove, she would likely be able to assert authority over the girl, regardless of what her parents had said. “What plan do you have today?” She asked.

“Well, the Crusaders have tried lots and lots of stuff to get our cutie marks, but nothing has been working. But I realized there’s something we haven’t tried yet!” Sweetie Belle said with determination. “So I’m gonna try to get my cutie mark in that thing! I’m gonna try to get my cutie mark in babysitting!”

Rarity understood why Sweetie Belle would try for such a thing, but there was one thing that confused her… Namely, what role she was expected to play in all this. “An interesting idea, I grant you, but… What help do you need from me?”

“That’s the thing!” Sweetie Belle said, her smile not fading. “You’re gonna be playing the role of the baby I’m babysitting!” She said, seeing absolutely no issue in what she had just demanded of her sister.

Of course, Rarity saw a problem with it, and she immediately objected. “You are aware that I am not a child, correct? What makes you think that I’ll want to play a role such as that?” She asked with a rather offended look on her face.

“You’re gonna do it because I’m in charge, remember?” Sweetie Belle said, puffing out her chest with pride. “If you don’t do it, I’m gonna tell mom that you didn’t listen to the person in charge! And she probably wouldn’t be happy with you!” She said, trying her best to sound authoritative.

Rarity was still against the idea, but Sweetie Belle had a point. As weird as it may be, their mother had indeed left her in charge, and she likely wouldn’t be very happy to find out that Rarity didn’t listen to her… With a long, reserved sigh, Rarity decided that she didn’t really have much of a choice in the matter.

“Very well then… I’ll help you, but just this once.” Rarity said, frowning as she realized this likely wouldn’t end well. Sweetie Belle jumped up happily in response, and immediately dragged Rarity off to her room. “Great! I already got the stuff I needed for this, so we can get started right away!”

As the two of them arrived in Sweetie Belle’s room, Rarity would notice a large package of diapers sitting on the floor, along with wipes and a container of baby powder. “Alright, lay down, sis!” Sweetie Belle said with a smile.

Rarity couldn’t believe that she was going along with this, but she had already agreed to it, so she had no choice. She laid down, taking the position that she saw most children taking when they needed to be diapered.

Sweetie Belle wasted no time in applying the diaper. She laid a pastel pink diaper underneath her sister, and applied a generous amount of powder to her diaper area. It mixed in with her white coat, but Sweetie Belle could tell that she had applied enough. Once that was done, she taped the diaper up onto Rarity tightly, smiling when she was done. “There we go, all diapered up!”

Rarity was embarrassed, but she stood up anyway, looking at the padding around her waist. “Alright, you have me… Dressed for the part, so now what shall we be doing?” She asked, looking at her sister with a blush.

Sweetie Belle began to pack things like a pacifier and a bottle into her school bag, and turned to Rarity with a smile. “Isn’t it obvious? I still have places to go today, so you’re gonna come with me. Basically, I’m gonna take you to school with me!”

Rarity’s eyes went wide, and she shook her head rapidly. “Absolutely not. There is no way you are going to get me to go outside while I look like… This!” She yelled, gesturing to the diaper around her waist. In response, Sweetie Belle just continued to smile.

“But I’m in charge, remember? That means you have to do what I say, just like I have to do what you say whenever you’re in charge!” She responded. Rarity often touted her authority over Sweetie Belle a lot, and the young girl was very excited about the fact that the tables were finally turned.

Rarity held her head low in response, muttering something under her breath angrily. However, when Sweetie Belle began to trot out the door, Rarity followed her, just as expected. Sweetie Belle was sure that all her friends at school would get a very big kick out of seeing her big sister dressed like this.

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Eventually, the two of them reached the elementary school, and immediately, everyone’s attention was on Rarity. Or, more specifically, on what she was wearing. A few of the students were already laughing at her, but others just seemed confused. As Sweetie Belle continued to walk into her classroom without a care in the world, she would eventually run into her two friends and fellow Cutie Mark Crusaders, Apple Bloom and Scootaloo. Both of them had a very confused look on their faces as they looked at the mare trailing behind their friend.

“Uh… Sweetie Belle?” Apple Bloom began, looking behind the girl to see her older sister standing there with a bright red blush. “Mind explainin’ why yer sister is dressed like that? And what’s she’s doin’ here in the first place? She asked, still looking very confused.

“I’m trying to get my cutie mark in babysitting! So I told Rarity that she’s gonna be the baby I take care of!” Sweetie Belle said with a surprising amount of pride. “Oh, yeah, I’ve seen babysitters feed the babies they take care of a lot, so I need to do that!” She said, using the small amount of magic she had at her disposal at her young age to levitate a bottle out of her bag. She then trotted over to a bench, signalling for Rarity come lay down on her lap.

Of course, this was the last thing Rarity wanted to do, but she had already come out this far, and she knew that she didn’t have a choice in the matter anyway, so she just slowly made her way over to the bench, lying down near Sweetie Belle. The second she laid down, the nipple of the bottle was shoved into her mouth, and she was forced to suck on it and drink every single drop of milk out of the bottle. The milk tasted pretty good, granted, but the method by which it was being fed to her was far too embarrassing for her to find any meaningful enjoyment out of it.

Rarity finished the bottle rather quickly, since she just wanted to get it over with and stop being fed by her little sister. It was perfectly timed, since as soon as the feeding was done, the bell rang to signal all the children to come inside for class. All the students filed into the schoolhouse, along with Rarity following shamefully behind.

The teacher at this particular school, Ms. Cheerilee, saw Rarity walk in with Sweetie Belle, and, of course, her attention was drawn to the pastel pink padding around the pompous pony’s posterior. But she just figured this was another plot by Sweetie Belle to try and get her cutie mark, so she just ignored it and decided to get on with her lesson, acting like nothing was amiss.

The class passed without much of anything happening. The lesson dragged on for what felt like forever, and Rarity and Sweetie Belle alike were both convinced they’d never get out of that room. However, when the lesson was almost over, Rarity felt the sudden need to go to the bathroom. She assumed that it was the bottle she drank earlier finally settling in her body. She stood up to go and find the restroom, but she was stopped by a small hoof holding onto her shoulder.

“Where are you going, Rarity?” Sweetie Belle asked, tilting her head. “I need to use the restroom, so I was going to go off and find it.” Rarity said in response. Sweetie Belle could only giggle as she kept her hoof on Rarity. “You’re silly. You’re wearing a diaper, so just use it, and I’ll go change you! It’s part of the babysitting experience~”

Rarity, of course, wanted nothing more than to object to this. But she knew that Sweetie Belle would hear no such thing, so she just resigned herself to her fate. She sat back down in the seat that Ms. Cheerilee had given to her, and just did her best to stop thinking about her situation and just… let go. The sound of her wetting her diaper could be easily heard by pretty much everyone, and it caused her blush to only become worse. Sweetie Belle, on the other hand, couldn’t be happier that she was gonna be getting all the experience she needed to get her cutie mark.

Once class ended, Sweetie Belle trotted back over to the bench that she had fed Rarity on, pulling out changing supplies from her bag and gesturing for Rarity to come lay down once more. Rarity, of course, simply laid down with no objections. Partly because she knew Sweetie Belle wouldn’t listen anyway, but partly because she just wanted out of her diaper.

Rarity was changed without much of a fuss. Her old diaper was taken off and thrown away, and she was wiped up with plenty of baby wipes, which caused her to shiver. Another, equally pastel pink diaper was placed underneath her, and she was powdered up before the diaper was taped onto her tightly.

“Now come on, Rarity! We’re gonna go home, and I’m gonna put you down for a nap~” Sweetie Belle said, happily trotting back home, with Rarity dejectedly and reluctantly following. Before long, the two of them had made it back to the house, and Sweetie Belle immediately ran upstairs. “Hold on, sis, stay right there!” She said as she ran up the stairs.

Rarity would hear some things moving around upstairs, and she was tempted to go up and ask if Sweetie Belle needed help. However, she was told to stay right here, and she wasn’t going to start disobeying “orders” now. Not after she had come so far. Eventually, Sweetie Belle came back down, and gestured for Rarity to come up.

The second the two of them reached the room Rarity had been sleeping in, she would notice that there was suddenly a crib in the middle of her room. She would be surprised, but at this point, nothing surprised her anymore. Sweetie Belle lowered the bars of the crib, and Rarity just accepted her fate. She slowly made her way over to the crib, laying down in it and watching as Sweetie Belle raised the bars once more. Before she left, Sweetie Belle grabbed a pacifier, and gently placed it in Rarity’s mouth, to help her sleep.

Sweetie Belle then left the room turning the lights off. Rarity sighed dejectedly, but closed her eyes anyway, deciding she might as well try to get some sleep. It was at this point that the girls’ parents finally came back home, and they walked up to Rarity’s room just in time to see Sweetie Belle closing the door.

“Shhhh, Rarity’s sleeping.” She said as she closed the door softly then walked off into her own room. In confusion, her mother opened the door, and saw her eldest daughter sleeping there in a crib, sucking slightly on her pacifier. It was a weird sight, but… it was also pretty cute. Rarity’s mother smiled, and gently closed the door so her “baby” daughter could sleep.

“You know…” She began, walking back to her room. “...We should leave Sweetie Belle in charge more often.”