Another pony request finished off, this one's for  ElCid, and it features Twilight getting mega level fat as per his wishes :P This is the fattest I've even written a pony too and I'm damn well proud of it XD Enjoy!

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Twilight Sparkle was widely known as Princess Celestia’s number one student and prodigy. The lavender coated unicorn had amazing levels of magical power and had saved Equestria with the other members of the Mane Six numerous times. This had caused her to develop quite the famous reputation around Ponyville, and much of Equestria, to the point of receiving fan letters and the occasional gift as well. Gifts of course being various sweet and savory treats that, Twilight being a bit of a sweet toothed glutton, gratefully ate every time. Needless to say, this had an effect on her size; her stomach was drooping quite a bit and gave the mare a doughy, rounded look, her plot was also large enough to slightly peek over her back and push her tail up a little, the flanks of it visible from her sides if viewed from the front. The tiny beginnings of a doublechin shadowed her face as well.

She was fairly self-conscious about her weight, or more accurately about the size of her butt, since it tended to attract the attention of others, ranging from stallions to mares to Rainbow Dash (Who was known for being a maremunching pervert). Her gut didn’t bother her as much as she was always on the chubby side, no small thanks to her not getting out much and studying or sleeping all day. Today was to be no different; she was going to study, probably hang out with the others for a while then retire for the evening, maybe receive more mail and gifts from fans.

“Spike?” she asked her pet dragon and friend as he entered the main room of her library slash house, “Any fan mail today?”

“Nope, not a single one!” the young dragon replied with a shrug.

Twilight nodded and went back to reading, but not before Spike suddenly hiccupped, followed by a green fired belch as a scroll materialized from it. Only Princess Celestia did this so the purple unicorn levitated the scroll over to where she was sitting and unraveled it, reading what it said:

“My faithful student, in honor of your continued service to me and all of Equestria, I have decided to give you a small, but constant gift: The confectionary treats that you so greatly enjoy will be sent to you every second day from now on, I hope that you do not mind this show of gratitude! Yours, Princess Celestia”

Twilight smiled, that was awfully generous (if, strange, admittedly) for the Princess to do for her, and she did love her sweets. It wasn’t long before a knock at the door came, and upon opening it, the familiar mailmare practically shoved a large package into her face. It was Derpy of course, the grey coated, and wall eyed mare grinned at Twilight and back away a bit, revealing even more boxes nearby.

“Hey Twilight!” she chirped, “Had to deliver these to ya, lot of boxes, all from the Princess apparently!”

“Yes I know Derpy; she sent a letter saying I’d receive some things.” Twilight replied, levitating some boxes in while Derpy dragged the rest in too.
Twilight sighed as the last box was brought in, thanking Derpy as the mailmare returned to her duties. Opening up the first box, she was delighted to see that they were in fact filled with treats! The lavender colored unicorn licked her lips and used her magic to pull some of the cakes and donuts lining the box out and bit into one; her eyes widened from how *good* it was, it was the best thing she’d tasted in a long time. With a greedy grin, Twilight began cramming her face with more food, not noticing, or caring, of Spike’s alarmed and slightly worried expression and she pigged out. Licks smacked together as they tasted frosting, jam and sugar, and treats disappeared past them at an impressive rate.

More impressive however, was the rate at which the pony’s belly was expanding. Her already podgy stomach began to swell and stretch as Twilight gulped down morsel after morsel mindlessly, not realizing her bloating at all even as her stomach began to push her legs apart and distend further and further towards the ground. The mare couldn’t care less, only stopping her eating when the box in front of her was finished, letting out a loud burp in the process.

“Mmm, these are good~” she purred, licking her lips to clear off any excess crumbs. “But I think that’s, -urrrrrp-, enough for today…”

Spike was dismissed as Twilight returned to her studies, her filled stomach gurgling away at her meal until she finally decided to waddle herself into bed for the night much later, falling asleep quickly due to her contented fullness.

As dawn rolled over the horizon the next day, Twilight was already awake, sipping coffee from a mug and dunking one of the donuts from a new box into it happily. Her figure was growing increasingly squishy since yesterday; her stomach reached her knees and wobbled with even the faintest of movements, her back and sides were thicker and developing a layer of fat over them, plot swelling out and peeking above and to the sides of her enlarged flanks as well, which were jiggling with minute stimulus, and her cutie marks had stretched out to fill up those bigger flanks too. A full on secondary chin rested below her real one as she brought the mug back to her snout, her cheeks squishing against it a little as she did so.

“Uh, Twi? Don’t you think you’re getting a lil…?” Spike nervously asked as he scooted around his friend and master’s puffy plotcheeks.

“Mmf? Not really, Spike.” She replied, smiling at the young dragonling and going back to her donut munching…donuts for breakfast? She was getting gluttonous…well more so than usual!

Spike grimaced at her and went about his cleaning duties as Twilight ripped open another box to continue her binge…and binge is what she did. Day in day out, nonstop gorging and fattening. A month later, she could barely move; a cow sized mass of mare slowly dragging itself along on bloated, flab engulfed legs, a belly that squished against the floor and rolled over itself, pushing out between her front legs, her sides, and smushed against the equally as floor dominating plot which spread out behind her like a pair of oversized bean chairs. Her flanks jutted out like furry domes with overstretched cutie marks adorning them, a fourth chin jostling against her chest and cheeks like footballs…Twilight was rapidly becoming a total *blob*, and didn’t even care, all she wanted to do was eat the Princess’ delicious treats.

“Hrrrf…dear…Prinshesh Sheleshtia…” she lisped as she read aloud the letter she was having Spike write for her, her fat filled face straining her ability to speak properly.

“It hash dawned of me…hrrrf, that theshe giftsh you keep shending me are shtaring…well, they have, made an impact on my physhique…-urrrrp-, sho I am grashioshly ashking that you pleashe, hrrrf, shtop shending them for now…your faithful shtudent, Twilight Shparkle.”

“Done!” Spike chirped as he signed off the letter and blew it away in a stream of green draconic fire.

“Thanksh Shpike” Twilight wheezed, eating a cupcake and lounging her corpulent form on a bed of pillows so generously donated to her by Rarity.

Spike just nodded and went back to work, worried for Twilight’s wellbeing. As the day went on she did naught but continue to stuff her face more and more…until there was a loud thud from the upstairs balcony, followed by the clops of heavy hooves down the staircase…it was Princess Celestia herself! Spike bowed to her, and Twilight tried to do so as well, though her bulk made it hard. The alicorn merely smiled softly at her student and trotted over, taking in the mass of mare that lay before her. A golden shoed hoof pressed against purple blubber gently, Twilight shudder-jiggling from the cold sensation of it touching her fat flesh.

“My dear student, what ever have you been doing?” she chuckled softly, examining Twilight’s sheer size.

“Hello Prinshesh!” she groaned, “I’d jusht had Shpike shend you a letter ashking you to,” she paused to smack her lips to dislodge some crumbs, “shtop shending me thoshe shnacks, I’m getting…well, big.”

“Ah, but dearest Twilight that was the whole idea!” Celestia giggled, amused at her little trolling attempt.

“…Wha?” was all the enlarged unicorn could grunt.

“This was an exercise in trust, my little…well, big pony. I wanted to see if you’d continue to eat these even if you got larger…I wasn’t expecting you to be such a greedy little piglet though.” Celestia smirked, eliciting a blush from the mare blob.

“O-oh…well…did I…pash?” Twilight piped, meekly.
“Indeed you did Twilight!” Celestia beamed, “and your reward is…more snacks~”

Twilight didn’t say anything, but her enormous belly growled hungrily at that revelation. Spike rolled his green eyes and left the library, having better things to do than watch Twilight get fatter.

Knowing her student wasn’t that mobile now; Celestia gathered up the many boxes lying around before her and began to slowly feed her student one treat at a time. The mare happily gobbled up anything put near her mouth, the cream, jam and icing staining her muzzle and her multiple chins. The alicorn monarch giggled and smiled, continuing to pop more morsels into the lilac mass’s cavernous gob. The more she ate, the more she began to inflate outwards, her dollop of a body was rounding out as it filled up, flabby rolls going taunt and thinning as she went from a deflated pile of purple tub into more and more of a bloated ovoid going on a sphere. But even as her stomach began to pack with confectionary delights, she didn’t slow down her consumption, a look of determination on her face, mixed with a pained fullness. Celestia just grinned to herself as her student went from blob to balloon.

A window rattling belch shook the hollowed out tree, as Twilight could do little but lick her lips and wiggle her sunken in hooves. Her body was a swollen ball of strained purple fur that gurgled and sloshed constantly, the odd creak of overstretched skin punctuating the also frequent burps and hiccups. She couldn’t eat another bite, she’d burst if she tried, so all she could do now was sleepily rock back and forth atop her circular tummy as her princess quietly massages her aching body with her hooves and hummed softly to her, licking a tiny bit of cream from her nose and smirking.

“Missed a spot.” She whispered. It was the last thing Twilight heard before fading into a deep, dreamless slumber.

“Has anyone seen Twilight recently? That egghead has been gone for like, a week!” Rainbow Dash complained, as she and the other members of the Mane Six, sans Twilight obviously, approached the library where the studious pony dwelt.

“I don’t know Dash, but I hope she’s ok…” Fluttershy mumbled, worried.

“Oh puh-leeeeeze Fluttershy, she’s probably just being all moody broody atitoody again!” Pinkie Pie giggled, rolling her eyes so hard they rattled about comically.

“Darlings I’m sure she’s just fine, perhaps she needed time to herself?” Rarity added, fondling her mane as she walked.

“Ah dunno guys, somethin’s mighty weird ‘bout this, usually Twi’d tell us if she needed tah have time alone.” Applejack also grumbled, feeling that something was off about the mare’s absence.

As the five got to the doors of the library and pushed them open, they collectively gasped at the room spanning, purple colored taller-than-a-Manticore and vaguely pony shaped blob that lay before them. Twilight had *grown*, and was now only barely recognizable as anything pony related, her limbs had totally disappeared into the recess of her fat, leaving her stretched out, blubber bloated body like a slug, absolutely covered in rolls all over her flesh, her belly, flanks and butt all seemed to have merged into one enormous mass with no clear beginning or end. All that was definite was her tail, swishing above building sized buttcheeks, and her head, which lay nestled between pony sized cheeks and an avalanche of chins that sagged down from her head. And snuggled atop this absolute mess of what was once their friend was Princess Celestia, lying with her legs tucked beneath her between the unicorn’s back rolls, using her magic to scritch and caress her blubber.

“…Oh, my,” was all Fluttershy could say, the others speechless.

Applejack and Rarity saw something out of a B-movie, Fluttershy was too shocked after her muttering to process it, Pinkie was bouncing up and down and grinning, and Rainbow Dash saw a being of beauty, her wings erect and fluttering slightly as she approached the Twiblob, practically trying to smother herself into her form and hugging as deeply as she could. What could they say? She was a perv and had a fat fetish. Twilight could barely feel the pegasi’s kneading of a plotcheek as she looked down as best she could to her friends and willed a tiny smile upon her near consumed face.

“Hulluh guwsh” she gurgled, barely able to speak. “Whuh brunksh yuh hurr?”

“We, were wondering why you’d not come out for ages, uh, Twilight.” Rarity gasped, craning her neck up at her friend.

“Do not worry Rarity, it is merely my doing, Twilight passed a test~” Celestia winked, causing everyone but Dash to frown at their mischievous ruler.

Dash was too busy fondling Twilight’s fat to be mad, and with all of her might, gave one of her plotcheeks an almighty slap that send sloshing ripples across her entire body, like a huge purple waterbed. Pinkie noticed this and sprang up beside the seated Princess and began to giggle as she was moved around by the rippling, jostling blubber.

“He-e-e-e-ey! Thi-i-is i-i-is awe-we-we-weso-o-ome!” the pink earth pony squealed, Celestia laughing and agreeing.

Twilight just let out deep, rumbling gurgly giggles herself as the sensations tickled her. The other three who were not all over her, literally, just back away slowly and walked off to get some cider, leaving the pervert, marechild, trolling monarch and her victim to their own devices. And Spike, who had returned from staying at Rarity’s all week, saw this sight as well, and just silently ran after them too.

Celestia finally flew down from Twilight’s back and landed herself on her enormous belly, which sagged down in front of her enough to be a solid (if pliable) surface to walk upon, and held up one last cake to her slob of a student.

“I want a full report on this by tomorrow.” She said with an evil smirk before jumping from Twilight and leaving her to bounce and jostle from the hyperactive earth pony using her as a toy, and to Rainbow Dash who also flew up to her face with a bright red blush on her face.

“Dush?” Twilight rumbled to the Pegasus.

The blue Pegasus was holding a left over box in her hooves and giving Twilight a sultry smile, the mare’s gargantuan stomach growled as she realized what was coming.

”Needs to be about 20% fatter~” Dash cooed, before stuffing a cupcake into Twilight’s greedy maw.