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Image imported from Derpibooru.
Original: https://derpibooru.org/images/3289005
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Original description below this line

Lexi’s face fell as she pondered her posterior in the mirror. Had it really always been this… full-looking?
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https://x.com/Horselover_Fat_/status/1751313098193940880?s=20
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IMPORTANT !!!
See comment section below for a lovely lewd TG TF BE corruption etc story a very generous anon is writing
Part 1: https://derpibooru.org/images/3285568
Part 2: https://derpibooru.org/images/3267499
Part 3: https://derpibooru.org/images/3286793
Part 4: https://derpibooru.org/images/3287205
Part 5: https://derpibooru.org/images/3287961
Part 5.5: https://derpibooru.org/images/3271800
Part 6: https://derpibooru.org/images/3288400
(this is Part 7)
Part 8: https://derpibooru.org/images/3289682
Part 9: https://derpibooru.org/images/3290061
Part 10: https://derpibooru.org/images/3291070
Part 11: https://derpibooru.org/images/3291336
Part 12: https://derpibooru.org/images/3291828
Part 13: https://derpibooru.org/images/3292648
Part 14: https://derpibooru.org/images/3293116
Part 15: https://derpibooru.org/images/3293860
Part 16: https://derpibooru.org/images/3294660
Part 17: https://derpibooru.org/images/3295324
Part 18: https://derpibooru.org/images/3295885
Part 19: https://derpibooru.org/images/3296621
Part 20: https://derpibooru.org/images/3297210
Part 21: https://derpibooru.org/images/3297559
Part 22: https://derpibooru.org/images/3297924
Part 23: https://derpibooru.org/images/3298679
Part 24: https://derpibooru.org/images/3299378
Part 25: https://derpibooru.org/images/3300142
Part 26: https://derpibooru.org/images/3300308
Part 27: https://derpibooru.org/images/3300824

suggestive4513 ai content38793 ai generated37844 automatically imported33020 derpibooru import33202 prompter:horselover fat227 oc4383 oc only3680 unicorn7811 anthro13233 adorasexy734 bent over191 butt9243 butt shot7 clothes14201 cute4348 female32683 frown241 horn13682 human to anthro37 implied butt expansion2 implied transformation52 implied transgender transformation46 large butt1392 leaning133 leaning forward99 looking back4523 not rarity89 part of a series79 part of a set250 rear view2481 sexy4513 short shirt136 shorts529 side view313 simple background2204 solo28416 solo female15104 story in the comments44 story included318 unicorn oc234 white background707 white shirt122

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Background Pony #1C2F
@Background Pony #1C2F
Hah, that one totally threw me for a loop. But I’ve got some plot concepts I might be able to throw together with it.
Also, for the next one after that which is Sunday in-Universe: I was thinking the store would have reduced hours open to the public, but Lexi would get some employee training time during the morning. Maybe something to reduce her inhibitions around cameras? Just an idea, wanted to get more conditioning in before the Monday event. I have other ideas still kicking around, so don’t let me dictate to much of the sequence.

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Background Pony #1C2F
Part 7
Themes: TF, mind stuff, expansion Spoiler: vulgarity
In the darkened security room of the toy store where her daughter worked on probation, Ms. Alverson saw a pink box sitting in the open palm of her host, the owner. She took the box and examined it. Inside the plastic window was a figurine, a very stylized cartoon pony with great big amber eyes framed by bold lashes and a flowing mane molded in purple plastic. Its tail was also purple, complementing nicely its light grey coat. The pony’s contented smile brought one to the woman’s face as she held it.
“Aw, she’s so cute!” Ms. Alverson cooed.
“I figgered ya’d feel an affinity,” the thing calling itself Simonson whispered. “An’ I think ye’ll be seein’ eye to eye wit’ yer dotter on a lot of things goin’ forwerd.”
“Oh, I hope so,” Lexi’s mom said, sighing and feeling concern creep back into her life. “I just don’t know what she’s getting into, with her…” she cut herself off, not wanting to talk about her daughter’s suddenly augmented bust, merely gesturing with her hands instead. “… well, I just worry about how she’s going to turn out.”
“Ah, lass, ain’t no con-sern ta be had!” Simonson chuckled. “A friend o’ mine had a … well, he had a sayin’ ’bout that topic.” He pulled a black plastic fob out of some hidden place on his person. Around its face, a ring of four arc segments began to glow in green, yellow, red, and blue light.
The chime of the browsing customer’s exit jarred Lexi from daydreaming about her upcoming triple-date. Suddenly she remembered what she was supposed to be doing; keeping an eye out for signs of trouble while her mom was at the mercy of Creepy Boss! But no sooner did she feel panic start to grip her chest than did her mother emerge from the darkened back section of the horrible toy store, seemingly none the worse for wear.
Lexi examined the woman as she approached for signs of changes.
Usual reddish-brown hair tied in a long ponytail, check. Usual brown eyes, usual lines on her face, check. The same generous bust size as Lexi’s, hanging over the same wasp waist as Lexi’s? Double check. Bottom mildly thicker than Lexi’s, check. What about her clothes? Same barely acceptable neckline showing off all the cleavage work’s dress code tolerated, plus the highest allowable heels, check. Well, at least her mom LOOKED normal. Lexi couldn’t spot anything off.
“Hi sweetie!” Ms. Alverson said happily as she approached Lexi’s counter with her usual jiggle. “I really owe you an apology, dear. I’m sorry, it must have seemed like I didn’t trust you before. But Mr. Simonson showed me some footage of something falling off the shelf, and said you’d had a reaction to some chemical in the plastic or something.”
“Yeah… or something,” Lexi said. Her recollection of the incident that caused her rapid breast growth was quite different, but at least now her mom no longer suspected her of having a (she couldn’t even think it) with Creepy Boss. “But why’d you give me so much grief over the other part? About how people would treat me or about me ruining my life? Jeez Mom, I’m only as big as you are!”
“Did I say those things?” her mom asked, genuinely puzzled to hear that version of their fight from yesterday. “I must have just been worried, that’s all. Oh honey, I’m sorry if I just…” she searched for the appropriately dismissive word. “Just… thoughtlessly parroted all those things society says about us busty girls and made you feel insecure about your figure!”
“Mom, I’m not ashamed of these, okay? I got… some decent advice the other day.” (She didn’t mention the source had been unreasonably sensible Creepy Boss training moments) “But all my life, I never saw you worry about YOUR image because of them. It was just… really hypocritical to suddenly turn on me like that, you know?” Lexi said, feeling awkward talking about this with her mother in a relatively public space. “Look, let’s just forget it. The important thing is that you’re safe. Hey, I have to charge you for that before you go,” Lexi said, pointing to the plastic Internet Pony box her mother was holding.
“Oh! No, sweetie, Mr. Simonson gave this to me on the house. Isn’t she adorable?” Lexi’s mom held up the box and waved it around excitedly to show it off, then pulled Lexi into a comforting hug. “And why wouldn’t I be safe? Don’t worry so much! Well, I’ll pick you up after your shift. Have a good day, honey!”
“Bye mom, see you later,” Lexi said as her mother turned to strut through the door and back into the mall. She didn’t like that the Internet Pony in that box looked suspiciously familiar, as if she’d seen it in a dream she couldn’t quite remember. Something about the purple mane and tail with its gray coat…
Creepy Boss didn’t make another appearance after that, which Lexi figured was just as well. If she confronted him about the meeting with her mother, she was liable to do something ‘insubordinate’ and lose her only chance to get her old name back. She just had to make it through Monday.
There were a couple more sales, then lunch. During break she got a text from Darius, adding her to their group chat with Selene. He said they’d let her know what day of the week to come over for their hook-up. After that, she confirmed the direct deposit of her first check had been made. Thanks to working through the previous weekend (all the better to beat probation faster, she thought) and the all-nighter, she was actually sitting on a pretty nice lump of cash. Maybe mom’s blessing came through, and she was going to have a good day after all. Even during the after school rush, the biggest emergency of the day was when a teen guy had to ask Lexi for help getting his little brother down from a high shelf he’d climbed onto just prior to closing. Creepy Boss was still nowhere to be found. All in all, a relatively quiet shift. Lexi closed the shop and began tallying the register.
“You got it?” the first teen asked.
“Check her out,” said the second one proudly, turning his phone so his co-conspirator could see the screen. It was a shot of the first teen standing beside Lexi as they both reached up towards the stranded younger brother, giving the photographer a nice oblique shot from behind that showed off the unicorn clerk’s girlish figure at a favorable angle.
“Choice!” the Teen One cried. “Look, you can see some of that titty where the shirt’s lifting up! She didn’t see you, did she? She’s kinda looking your way in this shot.”
“Nah, she was keeping that eye on the register. I was behind a pile of stuffed bears,” Teen Two bragged. “Mmmm-mmmm-mmmm! This chick is built! Let’s give the app a try!”
“What should we try first? Something small,” the teen who’d acted as the decoy said. “Change her eye color or something.”
“I got you bruh,” said Teen Two. He clicked on a paint brush and dragged it over to Lexi’s eye, then double-tapped to highlight it.
“ACK!” Lexi cried, dropping the wad of cash she was counting and rubbing her face. She felt like a fly had just bumped into her eyeball, but nothing came out on her hand. Blinking her blue eyes, she let the discomfort fade and then resumed her count.
“What else should we do? I got a lot of ideas,” Teen One said with an eager tone.
“Let’s see what this does,” Teen Two said as he zoomed in on a closer crop of Lexi’s head. Replacing paint brush for hair brush, he applied it to the image of Lexi’s mane. When he tapped to engage the manipulation and moved the brush, the digital simulation of hair became animated and moved fluidly along with it, as if pulled by a magnet. He swirled it experimentally. Both teens praised the realistic graphics their app had, even in live editing mode.
“What the fuck?” Lexi shouted as her mane suddenly started swirling around her face on its own. Falling off the stool, she rolled to her feet and tried to catch whatever unseen assailant had snuck in with her. But nowhere did she see anyone or anything else. She tried to hold her mane down with both hands but… somehow her hair was pushing them aside effortlessly! This was definitely not normal; her own hair was coming to life!
“And there we go, big side part,” the app-manipulating Teen Two said as he released contact with the screen. The image of Lexi’s new mane was an asymmetric one, smoothly brushed in comparison to her usual unkempt look, with a scroll curl here or there. “Made her look like that fashion pony from the Internet Pony show,” he remarked as he let Teen One get a closer look.
“Oh yeah, beautiful!” his companion said appreciatively. “Jeez, it looks so real! I love this thing!”
As suddenly as it started, Lexi’s hair relaxed. Wary and anxious, she examined it. And as she let go of her mane, it naturally settled into an elegant shape. Unsatisfied with look, she tried to push it over with her hand. It settled into the same shape again. She shook her head furiously, hairs flying straight out as her ears flopped painfully with the force. As if directed by gravity itself, her mane returned to the new style almost instantly after she stopped moving.
“Why are you doing this?” she cried into the darkened aisles of the empty store.
“Alright, enough with the small potatoes,” said Teen One, who’d distracted Lexi while the picture was taken earlier. “Let’s make her BIG!”
“We’re on the same page, bruh,” Teen Two smirked as he switched back to the full-body shot. “Watch this, pinch to zoom!”
The register was locked in a hurry and Lexi slung her purse over her shoulder, ready to run for the door. Then someone was grabbing her butt. No mistaking it, she felt two solid impressions on her ass cheeks that held firmly in place. She reached backwards, but there were no hands there to meet her own. She took her hands off, but the pressure remained momentarily… before pushing outward like whoever was groping her butt was now spreading her cheeks forcefully. Lexi became suddenly terrified of those implications. She spun around, saw nobody, and dashed for the door. She felt like something heavy was in each of her back pockets, but sprinted on anyway and locked the door behind her. After slamming down the steel barrier, she ran in her heels all the way to the exit where her mom usually parked. Rounding a corner, Lexi flashed passed two teens who stopped staring at their phone to gawk at her openly when she bounced by.
“Holy shit, did you see her?” Teen One asked while staring after the running clerk. “She looked just like in the picture! Hair and everything!”
“I wasn’t lookin’ at her hair, bruh,” said Teen Two with a broadening smile. The pair turned to face each other in realization. “This shit works in real life, too!”
“Wow, I love the new do!” her mother said as Lexi plopped awkwardly into the passenger seat and buckled up with frenzied speed.
“Thanksmomcanwegonowplease?” she sputtered out, scrunching down onto what she thought was an extra cushion she hadn’t noticed while getting in.
“What the- shit!” Teen Two said. “Shit shit shit shit! NO, MAN! NO!”
“What? What?” his accomplice asked with growing concern.
“Aw man, they doin’ us dirty!” Teen Two said in dismay. Teen One grabbed the phone from his limp grip and squinted in disbelief at the pop-up on the screen.
THANKS FOR TRYING AI-OF-THE-BEHOLDER, THE REVOLUTIONARY NEW AI-ASSISTED MORPHING APP! THIS COMPLETES YOUR 30 SECOND DEMO! PLEASE ENTER PAYMENT INFORMATION IN THE NEXT 5 MINUTES TO DECRYPT THIS DEVICE AND CONTINUE. PRICE: 5,8008 US$ OR 2 BITTOKEN. AFTER 5 MINUTES, THE PRICE TO UNLOCK THE ENCRYPTION ON THIS DEVICE AND RECOVER PASSWORDS TO ALL ASSOCIATED ACCOUNTS WILL BE 580,000,008 US$ or 19,997.242035 BITTOKEN. HOPE YOU GOT MONEY! uwu
“What the- it’s fuckin’ ransomware? But it worked!” the frustrated teen cried as his erstwhile partner in crime took back his soon-to-be brick.
Lexi was out of ideas. She couldn’t spot even tiny differences after brushing, blowing, wetting, drying, and flipping her mane. It seemed to always settle back into the same fancy super-femme style, and she hated it. She hated that it happened out of nowhere when she wasn’t even accosted by something cursed toy in the shop. What, or who, did this? What if it happened when other people were around? What if she turned into some kind of freakish monster… oh god, what if that happened right in front of her mom or Darius or… she couldn’t handle this level of panic right now!
Accepting defeat with her mane, she looked the new image of herself in the eye. The girl in the mirror was visibly frazzled and holding back tears, but at least she had gorgeous hair while doing it. “Here you are, having an existential crisis on a Friday night. Can you really make it all the way to Monday?” she asked mirror-Lexi. Wait, were her eyes blue yesterday? She couldn’t be sure, but she thought they weren’t. Stepping back to fit more of herself in the reflection, she spun around. Something else was definitely off. Her contour was different, a little more… balanced above and below the waist. Grabbing a footstool, she stood on it to raise herself up in the bathroom mirror. Something seemed off. She turned around. Definitely. She bent down and lifted her tail out of the way. Her first instinct was wolfish appreciation for the extra-shapely rump, but…
Lexi’s face fell as she pondered her posterior in the mirror. Had it really always been this… full-looking?
A few minutes spent comparing the size of her current shorts against the size of the others in her dresser confirmed it. Whatever happened in that store, it had plumped up her donk alright. In fact, she estimated several additional inches to her hips and thicker thighs to complete the package. At least it had the courtesy to change that one pair of shorts along with them, right? She sighed, and rummaged through all her bottoms for the ones specifically designated “fat days” and moved them to the front of the line. She’d have to squeeze into those until some replacements could be bought.
“Heh,” she chuckled at the irony. “My fat ass got that fat paycheck to cover its expenses just in the nick of time.” She collapsed on the bed. “Lucky me.”

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