A little too little

Fluttershy walked into Rarity's shop, the dressmaker's plump posterior pressed against the panled floor like two soft cushions under some heavy weight, pouring out over the floor like cookie dough. The shy mare didn't know whether to look away or not as her friend hummed, actually SWAYING back and forth to the beat of her song, those pristine, white cheeks of bubbly flesh swaying along with her hips.

She stood there for a moment before trying to get Rarity's attention, but she couldn't find any words, she just stood there.

She gasped as her wings popped out like switchblades, knocking a spool of thread to the ground. Rarity's ears perked and she slowly turned to face the yellow pegusus, her rear panning so the left cheek was more visible , her cutiemark curving along with that soft haunch. Her face lit up to see her friend.

"Oh hello dear. "I'm glad you're here." her face suddenly lit up with something..else... as her horn glows and a measuring tape floated into view. "I'm making a new dress...could you take my measurements, I'm not sure how the rear will fit." she gave her rump a wiggle, and a glint in her eye told Fluttershy she had no choice in the matter.

Fluttershy stood in the middle of the room unsure what to do as she looked into the fashionista's eyes, there was silence for a beat before she felt something pushing at her back. The familiar touch of magic dragging her forwards.

"Now now dear don't be shy, what's a little phsyical contact between girls him?" she chuckled in that warm rich voice of hers.

Fluttershy was pulled forwards, unable to pull away as that measuring tape was pushed towards her, that soft rump lifting from the ground, the flesh jiggling for a moment as it was freed from Rarity's weight, before finally forming back into that perfect shpere of soft wamth before the shy mare.

"Now come on, I haven't got all day, I promise I don't bite." She gave it another shake. Shaking it when she was sitting down and shaking it while it was presented for measurement proved to be two different beasts, those cheeks, now freed shook from side to side like pendulums, drawing Fluttershy's eye like magnets as her cheeks heated up. Being far too polite to deny such a firm request, Fluttershy gulped and took the end of the tape in her mouth. Being a pegasus she had no choice but to hold it there and take the other tip between a dexterous wing's feathers. Looking for another route of escape, she briefly contemplating faking a fainting spell before the magic jerked her forwards and she found her face pressed momentarily into the valley between those cheeks. It was just as warm and soft as she'd pictured, the cushy bubbles of flesh conforming around her features for a moment before she jumped back with an 'Eeep!' Rarity's giggle filled her ears again.

"Now dear, no need to get that close, just be a dear wrap that measuring tape around my hips." she looked over her shoulder at Fluttershy. The poor mare could hardly see her friend's face past the hills of her ass. She shut her eyes, and pressed forwards. She had no choice but to run her cheek across the curving surface of one soft cheek, depressing it with the pressure she had to apply to get the tape to run flat along her hips, her wing straining around the other side, the feathers brushing lightly against the surface. Rarity Chuckles again, slightly more ticklish of a sound.

"Oh my, be careful with those things." her lilting voice almost sings. "I'm sensative." As Fluttershy tries to ignore those words, she's jerked to a stop. The tape isn't big enough. Her wing and mouth strain to pull the measuring tape further, but she's only halfway around that ass. The pulling makes the slick tape sink into the softness of her ass, causing the cheeks to bunch up and jut out over the top and spill out over the bottom, both overflows collecting to almost swallow it in the middle. "Oh dear...I could have sworn that was long enough yesterday." Rarity chuckled
Fluttershy stood there, blushing furiously with a high pitched squeak. Rarity just looked at the shy pony over her shoulder with lidded eyes and an odd smile.

"Oh well dear, no matter, I'm sure I made the dress the right size, stop fiddling with that tape and bring it over why don't you?" She giggled, sending ripples through the flesh of her ass around that tape. Fluttershy stared for a moment, looking at the table next to her, a little silky number laying there, pristine and opulent, just like the mare who made it. She let go of one end to the tape with her mouth, that rump it had been holding back spilling forth, jiggling like a jello in a washing machine before it settled, slowly, the jiggles getting less and less massive until it settled back into those two pristine white spheres of flesh.

Rarity chuckled, those ripples picking up again as she shook her rump back and forth a bit in front of the yellow mare. Fluttershy could hardly see her face over it as it swayed sometimes. "Well, what are you waiting for?" Fluttershy could only stare, far too polite to question her friend, she grabbed the garment between her teeth and a wing, looking back at the large task before her. Rarity hummed lightly and lifted a leg. "Start here dear." Fluttershy obeyed the fashionista, bending down to draw the silky thing over her leg, it quickly formed to it's shape as she drew it up, all the way along her haunch to the curve of her cutiemark. Her nose rubbing against the flesh of her rump, she wasn't even past the fold at the top of her leg and she couldn't pull it any farther.

"Oh my...start at the other dear," Rarity chuckled. "That'll make it easier."
Fluttershy's eyes widened as her cheek was pressed against Rarity's...cheek. She knew she wouldn't have the mettle to say no. With a whimper she obeyed, shifting around, Rarity seemingly making sure her cheek was in contact with her ass the whole time, the heat of it making Fluttershy sweat a little. She finally reached the crack of her ass. That cassavas where the two seemingly celestial bodies where that tight silk strained to hold back the tide of flesh, Fluttershy could've sworn she could hear it streach and creak. Rarity pushed back, Fluttershy's nose vanishing into that valley between her cheeks.

"I'm waiting~"

Fluttershy was frozen a moment, she was finding it almost hard to breathe each breath filled with with the heavy, almost perfume-like scent of the clothes making mare. Hoping to get this over wtih quickly, and trying to ignore her wings stretching to either side, she bent her head, her nose flowing down between her cheeks to grab at that silk between her teeth.

And pulled.

Both cheeks bunched and swelled as the chub was pushed upwards like rising dough that would not be silenced, be covered. The evidence of her indulgent personality plain on her ponderous cheeks. Fluttershy pulled and strained but that rump would not relent, pushing up with every pull, jiggling and shaking like an earthquake had hit. "You'll have to try harder dear~" she whispered, pushing back against her, that rebellious flesh flowing over Fluttershy's features like the ocean over a shell, and she was just as buried, her face in warm darkness that only got bigger, softer as it bunched to the top of that silk.

Still she pulled, still she STRAINED against that silk that would not stem the flow of assflesh. It covered her face totally, but would not be captured by any clothing. Fluttershy grunted and groaned as it jiggled around her face...then, she felt it...progress, an inch of white disappeared beneath that grey silk. She gave another tug, and more of it vanished. But that made the job harder, the more she covered the more flowed over the top, the muffin was rising and rising. Still, she'd managed this far, she would not give up. She pulled and she pulled, her face sweating from the heat of that ass and the strain of her effort, Rarity's chuckle echoing into her ears.

With a final tug Fluttershy finally silences that last bit of rump, the chub finally vanishing under the silk with a ripple that flows down that rear until it is rained back into place, a perfect, large bubble of flesh. Every curve and couture from haunch to crack and haunch again visible with the tightness of that fabric.

"Ah, I knew it would fit." Rarity's liting voice sighs as Fluttershy flops to the ground in exhaustion. "Now...Just a little stretch to break it in..."
Fluttershy's eyes widened in horror, she looked up at the prodigious pony plot above her head as Rarity leaned back on her forelegs, stretching backwards like a cat on a luxurious pillow. What few muscles there were in her rump tightening and tensing...Growing...Fluttershy hardly had time to comprehend it, that fabric, that poor tortured fabric stretching, straining...to it's limits. With horrible sound, a RIIIIPPP that tore through the air Fluttershy watched as the seams split up and down each cheek, arching down along the legs like lightning bolts. That contained and captured flesh spilling out like dough from a ruptured container, splashes of pale white thigh pouring out around her thighs, seams of rumpflesh escaping through holes in the rear, growing wider by the second, a redness overtaking the white as Rarity blushed.

"O-oh my!" she squeaked. "Well this is unexpected...I spent all day on this dress....Now I'll have to start all over....well...at least I have a helper...who won't tell anyone about this..my weight must remain a secret! Right Fluttershy?" Fluttershy tried to nod, but she couldn't take her eyes away from the ripples of rump spilling from that defeated dressing piece. "Just to make sure..." Fluttershy's world turned to slow motion as she realized what Rarity was doing, her hind legs coming from under her to give away any support that plot of hers may have had, an avalanche of ass coming to swallow her in darkness, the striking warmth of the flesh spilling between the seams contrasting the silky cold of the garment she had help render a ripped mess.

"Now, be a dear and keep me comfortable while I think of what to make next." Rarity chuckled, and wiggled to get comfy.

The end