Stuffing Sweetie

by Archy

Rating: mature
Tags: Fetish, Rarity, Random, Slice of Life, My Little Pony: Friendship is Magic, Sweetie Belle
Length: 3257

Desperate for an extra plus sized model, Rarity turns to her sister for help.

An order for clothing for an extra extra set of plus sized ponies. Rarity was trying her best, but her eating just wasn't up to scratch. She had gained sure, but it simply wasn't enough. A kind offer from Sweetie who was in awe of watching her older sister stuff herself, seems to be the answer the dress making mare was looking for.

Story commission for Anon. Want your own story? Check out my journal for info.

Cover art used with permission from Graphenescloset.

Published 2018-08-11 13:40:01 UTC
Last updated 2018-08-11 13:40:01 UTC

Stuffing Sweetie

“A-are you sure that’s healthy sis?”

Sweetie Belle watched as Rarity pushed another cake into her mouth with her hooves, recently her sister had somewhat become a little more concerned with food than dresses. In fact looking around the boutique, the once beloved garments that her sister crafted oh so carefully by hoof and magic were giving way to mounds of food. Donuts, cakes, fritters. All sorts of tasty treats littered any nook and cranny she seemed to be have been able to find in the shop.

“Healthy? You know I never really considered healthy when I started all this eating…” Rarity these days almost seemed to be in a haze like state when she was eating. She finished off the cake, giving her lips a satisfied lick which was accompanied by a little “Urrrp!” as she blushed and put her hoof to her mouth. “Oh excuse me.”

“That’s alright, anyway. Why did you start doing this?” Sweetie enquired, it was very out of character for Rarity who usually prided herself on her thin and slender body.

“Well, it’s out of necessity really. I’ve been asked for a new line that will fit plus sized ponies, well...extra extra plus sized ponies. Bigger than any of the models I have available to fit dresses to. I figured the only way to get something big enough was to use...me.” she confessed, already looking at another cake, her magic starting to levitate it towards her.

“You? Why you? How are you going to make the dresses around yourself? Won’t that be hard.” There was quite a bit of visible confusion on Sweetie’s face as she tried to imagine an extremely large Rarity trying to fit an even bigger dress around herself.

“A model would be useful…” she sighed, hovering the cake inches from her maw. It was at the point Sweetie made what seemed like an obvious suggestion.

“Can I help?”

Rarity moved the cake away from her mouth and gave her little sister a look. “I don’t know, can you?” she started to think, her little sister was always pretty eager to help. But asking this might be too much.

“How would you like to be my model?” Rarity asked her. Sweetie’s face went rather deadpan.

“Well...how big are these ponies that you’re making these dresses for?” was all she asked.

“Very big...I was asked to supply dresses for ponies up to 5,000 pounds. I think I’m about 800 currently, quite far off…” she sighed. “There’s probably enough food here to stuff you that big Sweetie but, I don’t know how I’d feel fattening my little sister up to such a size.”

Rarity just looked so forlorn. Sweetie Belle knew what she wanted to ask, it would be easier if she just made the decision for her, the younger pony levitating the cake Rarity had been holding mid-air near her mouth the entire time and almost stealing it from her magical grasp. With her mouth open wide, she ate it in one bite. Rarity just looked at her with a shocked expression as her jaw nearly hit the floor.

“Y-you want to do this?” she just asked, Sweetie only nodded in return as she swallowed the last bits of the cake. Her stomach made a satisfied gurgle as it began to digest the first of many. “We need to be rather speedy. They expect the order in a week, if I can get you to size today that will give me at least three or four days to start to use your uh, generous modelling physique to design the dresses.” Rarity said, looking about the room as to what food to start with. Honestly, it didn’t really matter. Sweetie was going to end up eating it all anyway.

“Well, here goes. Open wide little sister.” Rarity said, picking up multiple cakes with her magic and starting to levitate them over to her. She did one final thing, which was flick the Open sign on the boutique to Closed to make sure nopony came in.

She started slow. She wasn’t sure how well Sweetie would take eating this much. She was young yes, but that didn’t always mean that you had a better appetite than other ponies. It just meant her body was perhaps a little more capable of dealing with an excessive amount of food. But to get to 5,000 pounds. She would be huge, gargantuan, absolutely enormous. In fact it was likely very hard to put into words just how big her sister would become. It was best to just get a set of scales to see what she was at during the stuffing, to make sure she could keep track of it all. How she was going to weigh her though was another matter entirely.

The second cake went in rather easily, Sweetie chewed on it for a mere moment and then her puffed out cheeks that were keeping the cake from spilling out of her lips contracted and it was gone, without a word the mare just opened her mouth expecting more. Rarity was happy to oblige as she began to levitate cakes in at a more rapid pace. Sweetie seemed to be getting used to it. A cake went in, then but a few seconds of chewing later it was gone.

Her body was already beginning to grow, her belly forming a nice little amount of pudge as her middle filled out to compensate for the more than average amount of food she was consuming. Rarity trotted a little closer and observed. A hoof gently giving her sisters stomach a little push to feel the softness of her belly. For the first time in the feeding session there was a small laugh from Sweetie as Rarity stopped feeding her.

“Sorry, couldn’t resist. You’ve gained quite a bit already. Your stomach seems to be digesting the food nicely. You doing okay?” Rarity asked her.

“Of course, anything to help you Rarity. I feel fine! Now, more please.” Sweetie replied, opening her mouth again, Rarity more than happy to keep stuffing more cakes in.

Her little sister was taking the food with no issues. Even Rarity was only able to manage a few of those cakes at a time before having to break to allow her stomach to digest and let out a few burps. Sweetie had already eaten...well she had lost count. The pile of cakes was considerably less, and Sweetie was already considerably bigger. At this point all Rarity was doing was levitating the food to her, so she thought perhaps a little bit of help with the digestion would be a good thing to do. Well, maybe it wasn't needed but she thought she may as well anyway.

Rarity took a seat on the floor next to Sweetie, right up against that expanding belly. The size it had already gotten was rather impressive. A few kneads with her hoof into that squishy tum just added to the suspicion Rarity had that Sweetie was taking this gaining a lot better than she had hoped. After a small mountain of cake she observed her sister. Her belly was large and round, plenty of squish to back up that size and the bigger it grew, the hungrier it seemed to be. She leaned down and put an ear to it, from within she could hear the satisfied noises of a full but still hungry stomach. The low rumble of the growling it made caused her lean back slightly, another little observation of that excessively large gut. It really was getting incredibly huge.

The rest of her body was taking the gain well too. Rarity craned her neck to view behind Sweetie’s bulging belly to view another rather impressive sight of two mammoth butt cheek starting to take shape behind her, in fact at this point it was the only thing propping Sweetie upright as her large stomach would have forced her onto her back long ago if it were not for two soft orbs forming behind her. Rarity realised she was running out of cakes but was curious to see what her sister had gained. Over from the other side of the room, as she fed her the last of the cakes she also levitated a small set of scales over and pushed them gently under the snug blubber of her stomach. The scales read just over 1,000 pounds. An impressive gain. She had already overtaken Rarity with ease.

Next up she had a large number of donuts to fill that massive, glooorrrppinnnnnggg belly of her sister’s with. Slightly easier to manage than the cakes but that didn’t seem to stop Sweetie. Rarity was easily able to levitate multiple ones in at a time, she seemed to be relishing the amount she was able to eat. Three or four donuts were simultaneously going into her maw as the mare chomped and chewed her way through fattening calorie packed treat after fattening calorie packed treat. Rarity had to keep gently moving the scales forward to ensure it wasn’t lost under the huge belly Sweetie was gaining. Bigger and bigger her body was growing with each lot of food that was getting stuffed inside her. That stomach was still getting larger and larger the more that was packed into it. Rarity was having trouble taking her eyes off it, she observed it again, pounds of pudge that stretched out in front of Sweetie that would only increase in size as Sweetie ate.

Those mammoth cheeks behind her were just getting bigger and bigger. Her tum was coping with the food but it couldn’t take it all, other parts of her body were compensating for the new fat that was forming. Her legs, all four of them were becoming a big chubby, taking on some of the weight and her face had fattened too. Her cheeks which were simply bloated out before with all the food stuffed inside them were now a nice round fattened shape that was adding to the look of her overall hefty size. Usually when ponies gained they started to develop folds of fat, especially at thousands of pounds. But Sweetie seemed to be keeping to a rather lovely round figure with no folds appearing anywhere, just flesh pushing outwards and upwards as Rarity continued to feed her donuts. She took a small glance at the scales, just over 2,000 pounds now.

“Sweetie you’re nearly halfway there, this is...impressive.” was all Rarity could say, still concentrating her magic as best she could on levitating food into her sisters mouth. “I had no idea anypony could even pack this much away without having any ill effects. You just keep eating, at this rate I may want to employ you as a permanent plus sized model…” Rarity said, not letting up her magic and just pushing in more donuts as Sweetie happily ate what she was given. “That belly of yours too is just magnificent.”

She wasn’t speaking, too content to just be stuffed by her sister, but in her mind Sweetie was almost giddy with joy. Her fat body was now immensely plush, just sweeping one of her fattened hooves over that huge gut of hers it felt so soft, so jiggly. The size of it was hard to take in, she swore that she now mostly just belly. She stretched her arms outwards slightly, giving that tum of her a good squish, to which it happily returned a rather satisfied glorp!

She couldn’t quite shift her body anymore, her size now verging her on total immobility. But she could feel behind her that her mammoth ass was only becoming fatter and fatter, much like her belly. A gentle wiggle of those wrecking ball cheeks was all she needed to do to affirm the fact that her plump tush, heavy with all that lovely fat, was sitting behind her acting as a very nice cushion for her to lean her body against. Her cutie mark was hugely stretched across both sides of her massive flank and it was only set to get larger with each treat.

“3,000 pounds now Sweetie, just two thousand to go. How about a little change for my little sister. Or are you the big sister now? Perhaps I should start calling you Sweetie Belly.” Rarity teasing her slightly as the donuts came to an end and fritters and other treats began to flow. Sweetie’s eyes just focused on the almost river-like appearance of the levitated food in front of her. Rarity was doing as much as she could to use everything in the boutique, food that had been stored upstairs in her room was now starting to flow down the staircase towards Sweetie as multiple avenues of levitated food was all merging to get to one location, her waiting open mouth that was chewing at an incredibly fast rate to get everything in. It was amazing the mare hadn’t yet expelled anything. Her stomach sloshed and swayed, continuing to grow as she fattened up more and more.

Rarity continued to feed and Sweetie continued to eat, eat, eat. That goal of 5,000 pounds was getting closer and closer with every bit of food consumed. Her sister was starting to disappear below her, as the fat, searching for more places to go was now starting to raise Sweetie upwards as her body still ballooned outwards. Beneath her she could feel her lower legs and hooves starting to vanish as a tide of fat began to cover them. Her absolutely monster rear was becoming larger and larger, rising above her head behind her as those two massive cheeks were growing almost visibly now every second.

“4,000 pounds big sister.” Rarity giggled, the last of the food making its way towards Sweetie as her immense body jiggled and wobbled. She didn’t even have to make movements to cause all that fat to sway around, it seemed to be doing it naturally, the huge size of her and the movement of her jaw enough the cause it to ripple around, the tide-like blubber wobbling to and fro. Her belly sloshing from side to side making audible noises.

Glooorrrrrrppppp!

Sloooooosssshhh!

Sweetie could feel her insides practically churning, she was so big. Ponies at this size were practically unheard of. Clearly there were some or Rarity wouldn’t be getting the order she was now fattening Sweetie up for, but her mind couldn’t focus on that right now. All she could see in front of her was levitating food and an expanding gut that seemed to flow out like a tide of blubber that was now taking up a huge portion of the lower floor of the boutique, her flank was doing the same but filling up the space behind her. Much bigger than 5,000 pounds and she’d fill the room. Her mind started to wander as she thought of a huge, five figure gut that would easily squish against walls as it tried to expand outwards and upwards. It wasn’t hard to think how lovely and soft she would be.

Rarity was just keeping an eye on the scale. Going up and up towards that magic weight she needed.

4,100 pounds...4,200 pounds...4,300 pounds…

As the scale tipped over 4,500 pounds there was a rather worrying noise.

CRUNCH!

Rarity had taken her eyes off the scales for a mere moment to find some more food to levitate towards Sweetie and at the rate her stomach was expanding now it was a fatal error. The scales which Rarity had been edging forward to escape her expanding belly she had stopped moving only for a few seconds. In that time, they had been covered in fat from Sweetie’s stomach, crushing them completely under the weight of it. There was no way to stop that huge, advancing tum that threatened to take over the room and dominate everything. Like a tide of white blubber ever advancing it continued to fill the room.

“G-guess the last 500 pounds will be guesswork. But it looks like the food is nearly out, ehehe…” Rarity stuttered slightly. The food was running low however. The final ten minutes of the stuffing session Rarity just crammed into her sister whatever was left around the house. When the final fritter was eaten, Rarity trotted backwards to admire her sister. The lack of belches had now come to an end, Sweetie just couldn’t hold it in any longer now that her mouth was free to do something else other than eat.

“BBBuuuuuuuuUUUUUUwwwwwwWWWaaaaaRRRRRppppppPPPPP!!!!!”

The ear shattering belch pierced the entire room, the windows rattled in their frames and the air filled with the sweet stench of sugar as Sweetie expelled the largest burp she could muster, really putting force behind it. Rarity covered her ears and could do nothing but stand and let her sister let it out. Sweetie’s massive body just rocked from side to side as she wobbled about as all that gas left her mouth. Eventually after a few minutes the air cleared and her body stopped jiggling as much as it was.

“You know, you might be the biggest pony in all of Ponyville.” Rarity said with a smile.

The word elephantine didn’t quite do Sweetie justice, because at her size, she would likely put an elephant to shame. Maybe not in weight, but in bulk and mass. Her stomach was huge, it had almost flowed out in front of her like a tide. Rarity gave it another small prod. It was as before, amazingly soft, even softer now that she had hit the magic weight. She might even be slightly over that. What was even more impressive than her belly was her rear, even wider than her tum, the two bulbous cheeks had pushed outwards and swallowed her tail. Her cutie mark was so massive it could be used as an advertising board seen for miles around, she’d only have to position herself in the right place. Her whole body wobbled and glorped, her head nestled into a spot just between her flank and her tum, her fat hooves just resting on the top of her belly. She didn’t say a word, like she was still processing everything she had just eaten.

“You’ll make a fantastic model for the clothes Sweetie, we’ll get started soon. I’ll let you just sit and process what you’ve eaten first, although I don’t really think you’ll be going anywhere anytime soon.” Rarity said with a smile. “I just hope I have enough material, I guess I wasn’t totally sure just how big 5,000 pound worth of pony would look like…”

“T-the girls are gonna be jealous of just how big I am. I bet Applebloom won’t believe it.” Sweetie said, speaking up for the first time, slowly starting to recover from her food induced coma. Rarity just grinned back at her.

“I’d say so, if they get jealous of size. I’m sure they might be a little envious.” Rarity replied, already starting to busy herself by collecting materials up to start forming a dress to try on Sweetie. “Now then, stay still and try not to uh...jiggle.” she said, beginning to work her magic as a dress began to take shape on the humongous pony who was now at this point, Equestria’s biggest and fattest model. In herself, Sweetie felt hugely content. There was certainly something to be said for feeling this satisfied and large. Helping her sister was nice, it was why she had done it, but feeling this big and happy. It was just wonderful.