Envy is Magic

“AAAND DONE! That’s enough photos today! Let’s wrap it up folks! Sweetie Belle you can change back into your casual wear!”

The photographer, a portly unicorn stallion wearing a blue suit, chic blue scarf and a tasteful red fez packed up his camera. The rest of the crew began removing the lamps they set up for light due to the cloudy weather. A couple Pegasi flew down the road to notify the oversized taxi coach for Sweetie Belle. The two unicorns powering it woke up and set it to motion.

One of the small mares ran up to Sweetie Belle and blushed at the huge mare dis-robing from her leather skirt and matching black leather top. In the evening sunlight her nude muscled figure practically glowed against the dark outcrop of obsidian rock she was posing against. Sweetie Belle thanked the beet-red mare for providing her clothes and slipped on an incredibly short, tight black mini-skirt and proceeded to stuff her beach ball sized breasts into a tasteful patterned red and pink tube top. The last piece of her outfit was a jet-black choker with a jeweled charm of her cutie mark dangling from the front.

In a week Sweetie Belle had grown another several inches to a staggering eight-foot eleven. Her legs rivaled tree trunks, her body oozing raw power and sexuality. Each mammoth breast weighed dozens of pounds and rested upon her chest, both of them perfectly shaped and formed, unaffected by years of sag or gravity. They bounced lightly with each heavy step of her nearly four hundred pound body. The portly stallion tipped his hat towards Sweetie Belle and departed in a flash of light. The other unicorn crew members soon followed.

The last was the blushing unicorn who’d handed off her clothes. A slim, trim little thing who was only five foot tall in her heels. Sweetie Belle paused her stride to caress the tiny mare’s cheek, her thumb pressing against her full lips. The mare responded in kind, opening her mouth to briefly suck on the thick digit, looking up at the amazonian with lustful golden eyes.

“Tonight,” Sweetie Belle promised, the word dripping with sensuality. The unicorn gently bit her thumb and disappeared in a flash of light.

“Where to?” asked the driver, as Sweetie Belle swung her leg into the taxi cab.

“Ponyville,” Sweetie Belle said confidently, settling into the not too spacious cab. She was already out-growing it not even 5 days of using it to get around. Photo Finish was either going to have to get somepony to magically enlarge it or commission a new one.

“What part?”

“Shopping district.”

“We should be there in thirty minutes,” said the driver, horn flaring to life.

The last week had been a whirlwind for the formerly frail little mare. Sweetie Belle had done two photoshoots already, an interview in one of the trendiest fashion mags printing out of Manehatten, a press Q&A that followed her runway debut and now this shoot for the upcoming fall line. Her face and body had dominated the headlines in the city. Everyone wanted a piece of her. Especially once word got out of Sweetie’s newfound fondness of nudity. It felt right to show off her body that everyone wanted to see. She was magnificent.

A bump in the rode broke her train of thought, her horn tearing a hole through the roof fabric of the coach. Sweetie had to laugh.

Once she calmed down her thoughts returned to the mare from before. The small, turquoise coated mare had been her acquaintance the first day on the job. Wardrobe was her role. Satin Stitches was her name. As well as being on Sweetie Belle’s beck and call for whatever she needed. After a couple days of stolen glances, not so subtle comments and lingering touches Sweetie Belle had taken Satin late in the night under the guise of a bathrobe malfunction. They had spent hours together in bed, pleasuring each other in new, sexy ways.

The next night Satin Stitches invited another mare to her room: Curtain Call, another athletic mare who was poised to join Sweetie Belle on Photo Finishes fashion festival. The other was a taller, handsome muscle bound stallion fresh from his workout at a local gym. Sweetie Belle eloped with him as well, sitting atop the strong stallion and nearly crushing his pelvis with the sheer weight and power of Sweetie’s body. And at the same time was able to pleasure the two mares while riding the stallion beneath her.

Sweetie Belle had relished the pleasure of just how easily she could physically and sexually dominate three others at the same time. With just her hands she brought both mares to orgasm. Two fingers up to the knuckle was all she needed. Sweetie had taken the opportunity to goad the stallion pinned beneath her, bragging about her sexual prowess compared to his struggling to satisfy her. The jealousy she felt off him had catapulted her several inches during that sexual escapade and triggered another incredibly powerful bout of orgasms.

It wasn’t a bad week for a young mare’s sexual awakening.

The carriage ride had been less bumpy and Sweetie opened the red curtain of her coach to peer outside. The familiar decorative facade of Carousel Boutique caught her eye.

“Pull up here,” Sweetie Belle ordered right as they passed. The coach screeched to a halt.

Getting out of the carriage was just as difficult as getting in but Sweetie Belle managed it with grace belying her size. Almost immediately she was mobbed by a group of stallions requesting autographs and pictures. Sweetie Belle obliged them one by one, diligently signing everything handed to her as more spectators began to assemble. Most of them just gawked at the formerly tiny mare they knew. About halfway through her signatures a powerful surge of magic flowed through her core and she looked around eagerly for the catalyst. A trio of mares she didn’t recognize were glowering from about forty feet away.

“Laaast one,” Sweetie Belle smiled, and kissed the parchment below her name. The stallion practically squealed as he received the autograph and the envy she felt from afar practically tripled. Sweetie waved the rest of the crowd away and shakily walked her way down the street to Carousel Boutique.

The jealousy flowing through her body was powerful and already she was growing. Inch after inch pumped through her every step. The tube top she had on stretched over her expanding bust, cola can sized nipples stiffening through the thin fabric. Titflesh bulged up through the top to reveal more than a foot of cleavage, and the hem slid up past the top row of her brick-like abs. Her already tiny mini skirt rode up so high the bottom of her ass-cheeks was revealed. Anyone at an average height would be able to look up and see Sweetie’s glistening, dripping pussy winking above them. There had to have been somepony she knew in the crowd seething with jealousy. She hoped it was Diamond Tiara.

Finally at a staggering nine-foot eight, Sweetie Belle crouched slightly to knock on the door of Carousel Boutique.

KNOCK KNOCK RIIIIIP

And her skirt tore vertically from the base of her tail.

The scattered gasps that rose to her ears only served to arouse her further. It wasn’t that big a rip, but it would be useful to have.

“Oh,” Rarity said. Her smile felt plastered onto her face. From the look on Sweetie Belle’s, it was already apparent where this conversation would be going. “Please, come in.”

Sweetie Belle grinned back. “Thanks, Rarity,” she said. She rested a hand on the top of the door-frame and bent down a bit so that she could see Rarity better. “You sure I’ll fit?”

A vein on Rarity’s forehead twitched. “Yes, dear. Come inside.”

“Okay!” Sweetie Belle’s nine-foot-plus figure filled most of the door frame, so it was no surprise when she not only had to bend down even more to fit through, but also sidle through at an odd angle to fit her larger…assets through comfortably.

She grunted as her shoulders rubbed against the top of the door. Rarity’s twitching vein only worsened as she saw Sweetie’s can-sized nipples rubbing against the opposite side of the door frame, each barrel-sized breast bobbing gently as its owner struggled to fit through the too-small door.

Finally, though, Sweetie managed to cram herself into the Boutique, the door thankfully undamaged. She drew herself up to her full, nine-foot-eight, height and gave a happy-sounding sigh. “Wow,” she said, looking around the main room. “This place looks a lot smaller than I remember.”

“Very odd,” Rarity chuckled bitterly. “Are you… here for anything in particular or shall I be retiring upstairs?

“Aw, c’mon Rarity.” Sweetie Belle pouted. Before Rarity knew it, her much-larger sister had taken one gigantic step forward and seized her in a hug. “Don’t I get any time with my ‘big’ sister?”

Rarity’s shoulders almost shook at the added inflection. She shifted her own arms until they were at a less-awkward angle around Sweetie’s muscular leg - a leg which was thicker around than she was - and stiffened a bit when she realized that the light weight on her hair bun was in fact the underside of Sweetie Belle’s bombastic bust.

“Of course, dear,” she said with a grunt, pushing herself forcefully out of Sweetie’s grip. With arms as thick around as cider barrels and a rock-hard set of abs to hold her against, it was clear that Sweetie could have easily held her in place. Yet, thankfully, Rarity was able to struggle her way free from beneath her sister’s amazonian form, though not without getting her hair mussed up and her sewing glasses tilted. “But, ah, perhaps - “

“You don’t look like you’re too happy to see me,” Sweetie Belle said, looking down at her.

Rarity blanched. “O-oh, no! Not at all. I’m simply overjoyed! I just - “

“Feel a little small?”

The vein came back. “Sweetie Belle,” Rarity said. “I’m sure i don’t know what you’re talking about.”

“Oh, it’s fine,” Sweetie Belle said. She glanced around the room for a second, her gaze brightening when she spotted the love-seat. “Aha. Mind if I take a seat?”

Rarity shook her head mutely.

Sweetie took a single, gigantic step over to the love seat, setting her incredible breasts jiggling above Rarity’s head, and slowly sat down. The love seat creaked and protested under her incredible weight; somehow - not surprisingly - she managed to cover both cushions with her muscled, shapely rear.

Sweetie Belle groaned in satisfaction. Her arms lifted over her head and flexed - stretching, of course, but also indubitably showing off. She looked absolutely ridiculous, Rarity thought, her head and back stretching far above the top of the couch and her over-sized hands drooping over the sides. It was clear, though, that Sweetie loved every inch of her big, bulging body, and it seemed that she wasn’t afraid to go even further in showing it off.

Sweetie finished stretching and let her long, thick arms fall to her lap. She caught Rarity’s eye and grinned. “C’mon, sis,” she said. “Come take a seat.”

“Next to you?”

Sweetie’s grin spread even wider, and she shifted her weight a little bit to let the love seat groan a bit more. “Doesn’t look like there’s much room,” she said. “But…”

She patted a hand on her lap, right between her thick, corded thighs - and right beneath the shadow of those big, round breasts.

“Why not right here?”

“I don’t think that’s prudent,” Rarity said, eye’s darting around her shop for other possible chairs to sit in.

“But I want to tell you all about what I’ve been up to this past week since I made it big in Manehatten!” Sweetie Belle practically gloated, whipping her long, mauve curls out of her eyes. “And I’d like to tell you about it while you’re comfortable.”

Sweetie Belle tapped her thighs insistently, her long, strong legs sticking straight along the floor.

“...Fine,” Rarity finally relented, briskly walking over. Rarity felt herself stiffen up as she reached the seat; Sweetie Belle was absolutely filling that seat to beyond capacity. The arm rests were stretching to accommodate that rump. She turned around and braced herself on Sweetie’s muscled leg, hoisting herself up.

“Comfy?” Sweetie Belle said innocently, as her sister shimmied into the slight depression between her legs. Rarity settled against her sister; back pressed up against the rows of hard abs that lined Sweetie’s stomach. Her hands found purchase on the rock-like thighs to her sides. Beneath her rump she could feel a dull heat, and Sweetie’s monumental breasts were just grazing the top of her hair bun. The position cast her in shadow. Rarity felt utterly surrounded by the bulk of her little sister.

“I suppose you could say I’d prefer a chair,” Rarity let her hands fall to her own lap, and became distinctly aware of the rise and fall of Sweetie’s big body as she breathed.

“Do you want to tell me about your week?” Sweetie Belle began, enjoying the warmth in her lap. Enjoying the physical dominance of her body over Raritys. She couldn’t even see her like this but it didn’t matter. In fact that her breasts blocked her view preferable because she could focus on sound and touch.

“I shall,” Rarity felt her body heating up from this close contact, wishing instead of her dress and long-sleeve shirt that she’d opted for something more casual. “I filled several orders but the largest one I unfortunately did not hear back from.”

“The bathing suits?” Sweetie Belle said softly, inspecting her fingernails.

“Yes,” said Rarity, the tone in her voice sharp. “While the stallions seemed to enjoy the suits I had to offer I have not received any further contact from them.”

Sweetie Belle almost laughed. “I did a bathing suit line a few days ago and that got picked up immediately. One-piece, bikinis and some other designs,” she recalled the drooling stares from some of those stallions. “It was very well received!”

A pang of jealousy hit Sweetie Belle like a ton of bricks.

“Well, isn’t THAT just wonderful for you,” Rarity seethed, dabbing the sweat beading her forehead.

“Yesss,” Sweetie Belle hissed, her body trembling with anticipation. “That was my second photo-shoot of the week too. Just did my third today.”

Rarity harrumphed. “I’m sure you’re quite pleased. I remember when Fluttershy picked up a modeling job with Photo Finish years ago. She absolutely loathed it.

“I know,” Sweetie Belle took a couple deep breaths trying to maintain her composure. “She told me all about it once. How much love and attention she got,” she gulped, trying to carefully pick her next words. “And how incredibly envious you were of getting that modeling opportunity and not you.”

“I’m not ashamed to admit that, no. It was a dream I had and didn’t obtain,” Rarity said in a careful monotone.

“I obtained it,” Sweetie Belle goaded, her body tensing.

Rarity didn’t reply. Sweetie Belle felt her sister shift on her lap and another shot of jealousy. It was even stronger than before. She could feel the emotion seeping off her sister.

“Aside from the photo-shoots I had several interviews with popular ponies in fashion,” Sweetie barreled through to the next point. “Manehatten Fab! Seasons and Skirts! Hot Hot Hot!” she felt her pussy starting to slicken. “All those go live next week.”

“Congratulations dear,” Rarity muttered.

“You sound so upset, Rarity,” commented Sweetie Belle, “Aren’t you proud of me rising to this level of success?”

“....I’m… proouud,” said Rarity through clenched teeth, “of you.”

“By next week I’ll be the biggest mare in Equestria,” Sweetie poured on the self-praise, her richer voice dripping with self-satisfaction. “I’m going to be everywhere… which means you don’t need to ever worry about me again!”

“I'll tell Pinkie Pie to throw you a party.”

“Come on, you still sound tense…” Sweetie Belle was trying with every fiber of her being to keep herself under control. “Here, let me help you relax.”

Sweetie Belle brought her big hands to Rarity's backside, massaging her sister through her shirt with her big thumbs. Her fingers were so long they simply rested against the sides of Rarity's breast, just enough to caress the little mounds with every light motion.

“Darling you’re… how do I put this?” Rarity went to move but couldn’t. The grip she was in was too strong. “Touching me.”

“Of course. That's a massage. I’ve been getting free daily body massages as a perk for being such an active model,” Sweetie Belle said nonchalantly, moving her thumbs in small circles.

Rarity flinched at Sweetie Belle’s big fingers pressing into the walls of her breasts, and brushing against her nipples. “That’s! That’s not really what I mean, Sweetie.”

The jealousy seeping off her was already working its way through Sweetie’s body even prior to the massive spurt building within her. As she continued her massage her height began slowly climbing. Already Sweetie had inched up to nine-foot four and she was rising ever higher.

The clothes she had on began to tear at the seams.

“Sweetie! I… think we can wrap this massage up,” Rarity unconsciously arched her back as Sweetie’s finger tips sensually pressed against the front of her breasts.

“Already? But I... wanted to do... something nice... for my little sister,” Sweetie panted, her breath short as the tube top she wore constricted her rising chest.

“I’m not your little sister!” Rarity insisted, her face flushing red.

The envy spell pulsed even stronger within her, and Sweetie felt her pussy wink hard, making Rarity's ass bounce slightly up.

“Oh you are now!” Sweetie Belle gasped and inhaled, the fabric of her tube top tearing loudly and falling to the wayside in big, tattered sheets. Each sixty-pound breast falling into place next to Rarity’s head.

Sweetie Belle moaned, continuing her massage and outright rubbing her sisters cute little breasts now. She looked down at Rarity between the valley of her big breasts and met her sisters eyes with a smug grin. “I’m the big sister now. I’m bigger, better and way more successful than you ever attempted to be. Just admit it!”

“I’m, ah!” Rarity felt her sister’s pussy throbbing beneath her and writhed with unexpected pleasure. Sweetie Belle reached her fingers to the front of Rarity's chest and tore her top clean off, cupping her tits with three fingers each. “I’ve nothing to admit! Sweetie Belle! P-Please!”

The impending orgasm was almost upon Sweetie and she needed more. Wanted more.

“You’re jealous!” Sweetie declared, sliding one hand down to Rarity's crotch and hooking her bottoms out of the way with her index finger. “Just admit it! You’re not proud! Just say it!” she slipped her big finger inside Rarity's tight little pussy.

“Ah-ah ah!” Rarity squirmed and bucked her hips up, helpless to her own heat, arousal and lust. The big finger was so big, warm and tight. It was like being rutted by a stallion. “YES! ALRIGHT I ADMIT IT! I’M JEALOUS!”

The nine-foot nine mare moaned and seized up. After ten minutes of fighting to stay up the loveseat’s legs gave out, the seven hundred plus and growing weight too much to bear, falling to the floor with a bang. The wooden sides of the seat went immediately after, succumbing to the widening hips they had bravely tried to contain.

“I’M JEALOUS THAT YOU GOT A JOB WITH PHOTO FINISH WHEN I NEVER COULD! I’M JEALOUS THAT MY SUITS DIDN’T FALL THROUGH AND YOURS DID! I’M JEALOUS THAT BY NEXT WEEK IT’S GOING TO BE YOU THAT’S ON EVERY BILLBOARD, EVERY STORE, AND NOT ME!! I’M JEALOUS YOU GREW TO BE TWICE THE SIZE OF DAMNED CELESTIA IN A WEEK!” Rarity screamed, her cunt spasming over the increasing length and girth of Sweetie’s finger, now plunged up the the knuckle and thoroughly filling her up. “I ADMIT IT!”

It was like a bomb went off in Sweetie Belle’s body as she came. She simply exploded in mass and size, her body leaping towards the ceiling entire feet at a time as the accumulated jealousy from Rarity fed incredible amounts of energy into the spell. Ten feet, eleven feet, twelve. Hundreds of pounds of titflesh swelled on her chest, the size of them growing comparable to boulders. Her veins pumped blood into the fresh muscle rippling across her already powerful body. Thirteen feet, fourteen feet, fifteen.

Rarity came too from the impossibly large finger swelling inside her soaking wet pussy, the digit slipping out from the gush of her orgasm and the spray of fluids erupting from her sisters growing, orgasming pussy beneath her, soaking her rump and legs with hot sticky juice. It was too much to bear. Rarity slipped between Sweetie’s opening legs and fell to the floor in a wet, warm puddle, the squelching of her big sister fingering herself lewdly right behind her head.

At a staggering sixteen foot, five inches the deluge of Sweetie Belle’s orgasm finally ceased. Her horn had caught the lamp lighting the room and her gigantic ass had bowled over many racks of clothes. She stretched her gigantic pillars of legs out and braced her trampoline sized hooves against the wall by the front of the shop, resting her mountain of a back against the wall opposite. At this size she unapologetically filled Carousel Boutique, and anyone walking through the front door would be greeted by the hallway created by her sequoia-thick legs.

“Ahhh…” Sweetie Belle marveled at her giant, powerful body. She was officially the biggest thing in Equestria as far as she was concerned, and nobody would refute her now. Photo Finish was going to love this. What better way to advertise fashion than on the biggest, sexiest model alive? She was like a walking statue carved from marble.

“Uhhhnn,” came a moan from somewhere between her legs. Sweetie Belle’s horn buzzed to life and grabbed her little sister.

“Oh Rarity,” giggled Sweetie Belle, the fashionista a total, soaking wet naked mess. Sweetie curled her arm around her massive boulder sized breasts and dropped Rarity into the warm cushion of her cleavage. “Don’t you feel better for being honest and letting that all out?”

Rarity lolled her head around and moaned again, dazed from her orgasm and the events that just transpired.

“Thank you for helping me become the mare I am now.” Sweetie boomed, her amplified voice loud as a megaphone. “I really, really appreciate it. You’re the best little sister a girl could ask for.”

A devious smirk crossed Sweetie Belle’s face.

“And I’ll be sure to credit you in my next big interview in Canterlot.”

Rarity was too exhausted to do anything but watch as her smug big sister started growing even bigger before her eyes.