1. All Bottled Up

“….Now Starlight, I’m leaving you in charge. You need to help open the Foals Tea Party, make sure that Derpy doesn’t discover her surprise Birthday party…”

Starlight interrupted her with a raised hoof. “Relax Twilight, it’s not like I’ll mess everything up and misuse magic creating a horrible mess, right?”

Twilight tilted her head, arced an eyebrow, then turned to look up at Anon. “Nevermind. Anon. I’m counting on you, you’re in charge.”

Starlight’s mouth dropped and she let out a loud whinny. “What the…Twilight! This isn’t funny.” Twilight ignored her and instead flapped her wings. She rose into the air, flying up to Anon’s eye level. Most of the ponies only came to his knees height wise and Twilight was no exception. “I fail to see why I should get involved in this mess?” He hadn’t even looked up from his ponephone. Starlight meanwhile, was getting increasingly irate at being ignored. “I’m standing right here, don’t ignore me!” Twilight sighed and looked down at the other pony. “I’m sorry Starlight. But, c’mon. Every time I leave you, something goes wrong. You know what they call insanity?”

Starlight looked down and pawed the ground. “Doing the same thing and expecting different results.” Twilight nodded. “But see, with Anon’s help you’ll do it right this time for sure!” Anon, meanwhile, was anything but committed. “I still don’t see why I should get involved.” Twilight gave him a sly look. “If you do, I’ll let you pet me. For an hour.” Anon looked away, trying not to appear interested. “That sounds more like something you’d enjoy.” She had him. Now just to reel him in. “Me and Fluttershy.” Anon’s head snapped back around and he quickly took her fore hoof in his hand. “FineI’lldoit.”

Twilight smirked. “Alright, I’m going then. See you too soon. Good luck”.

Starlight huffed. “I still say I can do just fine witho-whut?” Without warning Anon had reached down and scooped Starlight into his arms. He began moving to the kitchen. “Hey, put me down.” Starlight flailed her legs futilely in the air. “I’m a big pony and can walk on my own, thank you.” Anon gave her a little jostle. “Not gonna happen. You aren’t costing me snuggles with Twilight and Flutters, GlimGlam. Until Twi gets back you aren’t leaving my sight.” He took a finger and booped her snout.

“Fine,” she struggled to hide the smile the boop had caused.

Later.

“-and so I told her, that’s why you always carry extra smoke pellets!” Trixie giggled and snorted at her own joke. Starlight gave her a polite giggle. Anon was disinterestedly looking at his phone, timing them so they weren’t even a second late. He was going to have snuggle time, no matter what!

“Trixie!” He looked up. Starlight was alarmed and waving her hooves wildly in the air. “Your pouring salt, not sugar on the cookies!” Trixie shrugged at her alarmed friend. “Salt, sugar what’s the difference?” Anon was about to retort, when he noticed surrounding Starlight’s was a red aura. “Alright, we still have time.” He picked Starlight up, causing her to start protesting again. “Not now,” he told her. Had he been paying attention, he would have seen that this only made the red aura glow even more brightly around her. Pointing at Trixie, he scowled. “You stay here and do NOTHING!” Trixie blinked. “Bu-“ He interrupted her. “Nothing!” He carried Starlight through the door and sat her down on the ground. Looking down at her he rubbed his arm where she’d burned him.

“What the hell GlimGlam?” Starlight had apparently just noticed and was panicking too. “Oh no, oh no. I…was just getting so angry at Trix, at you, and at Twilight. I tried to suppress it and I guess my magic is reacting to it!” Bending down, he gently stroked her mane. He had learned that ponies tended to be calmed by this. “It’s okay. Listen. You just need to control it. Show Twilight we aren’t screw ups.” Glimmer nodded her head and focused. “I learned a containment spell for pregnant mares. It should strengthen my body and keep the anger stuff in.” Anon saw the red aura disappear and smiled. He petted her on the head. “Good job, Glim Glam.” She smiled then sniffed the air. “Do you smell smoke?” Anon’s jaw dropped. “Crab apples, we left Trixie alone in the kitchen!”

The two rushed in and saw Trixie waving her hooves at the stove, which was billowing smoke and belching blasts of fire. Anon rushed over with the fire extinguisher while Glimmer grabbed Trixie. “What did you do?” The other just shrugged. “Trixie doesn’t know. She thought if she cooked at a higher temperature, the cookies would bake faster. Problem solved, right?” Starlight’s right eye twitched and for a second the area around her fur flashed red. Then it stopped. Instead, Starlight’s body shifted. Her flank expanded and her body lengthened. “Look, if we stay on schedule we can use magic to fix this later. C’mon girls, we need to get to the store and buy cookies.” Anon was holding the door for them. Trixie, oblivious, trotted out. If Anon hadn’t been distracted with thoughts of cuddling Twilight and Fluttershy, he would have noticed that instead of coming up to his knee, Starlight head now crested his knee and was closer to his mid thigh.

At Pony Mart

“C’mon, Trixie, Anon is waiting for us outside.” Starlight had grabbed the cookies and was standing in front of her best friend while impatiently tapping her hoof on the ground. Behind her, her tail twitched with agitation. “It’s not that simple Starlight,” Trixie responded. She was ignoring her friend’s clear displeasure and was holding up a bag of her favorite crackers in one hoof and in the other was a box of sweets. “Anon only gave Trixie enough bits for one of these. She just cannot decide as both snacks are equally yummy.”

Starlight was biting her lower lip so much to avoid saying anything that she was practically drawing blood. Did Trixie not realize they were in a hurry?

Around Starlight, the bright red aura sparked only to disappear. Slowly, her head began inching higher and higher. When they’d entered the store, she had only been about one and a half times Trixie’s size with her head reaching the second highest shelf. Now her mane and horn both crested the store aisle they were standing in. “C’mon,” she finally had had enough and reached out with her magic. She took hold of the much smaller pony and began dragging her to the counter, “I’ll buy them both for you.”

Trixie cheerfully opened both bags and took out some of each, popping them into her mouth. “Wow, thanks Starlig-by Celestia! You’re huge.” Trixie was looking up at her friends large flank almost as wide as the aisle itself. It hadn’t grown proportionally either. It was evident that Starlight’s butt had inflated into a much fuller, thicker size as had her hips and thighs. Her udders hung lower and had swollen thickly between her legs. It was then Trixie could swear she saw a strange red aura surrounding her friend. It disappeared quickly, only for her to watch in astonishment as Starlight’s butt rose higher in the air above her. Her flanks were expanding and the furry cutie marks were both now brushing the aisle shelves on either side of her as she walked.

“I guess I could lose a few pounds,” Starlight grumbled as she kept walking. Her hip checked one of the store shelves. It shuddered at the impact, but stayed in place. It must have been welded to the floor.

The two lined up to check out. Starlight was drawing odd glances, but in Equestria, a land of magic, far stranger things happened all the time. If someone wanted to stay out of something, the cardinal rule was to pretend nothing was wrong. Still, that didn’t explain Starlight’s lack of reaction to what was happening to her. Trixie decided to try again.

“Starlight, you’ve got it wrong. I mean, you’re gigantic!” Trixie was reaching up and desperately tapping her friend’s thigh. Starlight wasn’t growing proportionally. Her rump had thickened significantly. Her thighs had thickened with muscle and fat.

“Okay, now you’re just being mean, Trixie. Stop it.” Even as Trixie opened her mouth to try again, Starlight’s horn flashed and Trixie’s mouth was magically held shut. “Just…let’s get through this line and back outside to Anon, okay Trix?”

“Finally! What took you guys so….” Anon broke off as he saw Starlight emerge from the door frame. Or at least trying too. She was stuck in the frame. Her expanded rump too wide and thick was not going to fit. “Uff.” Frustrated she growled and her body again became encased in that red aura. Then Anon watched as the aura flickered and vanished only for the now enormous pony to pulse larger in front of him. As her body expanded, cracks started to spread out from the door frame. The frame groaned against Starlight’s growing body before….

*Crrrackkkk*

Anon put his arms up as pieces of wood and plaster flew out and with a relieved grunt Starlight pulled out of the store.

Starlight rose up and looked behind her at the ruined entry. “They really need to work on this door.” She shook herself to get rid of the debris from her mane, tail and fur. “Anyway,” she turned to face Anon,”sorry it took so long.” She threw a dirty look back at the confused Trixie who was staring in bewildered at the broken frame.“Somepony couldn’t decide on snacks.” Anon was shellshocked. Starlight had grown to the point she was now looking him in the eyes!

“Are you…okay?” He hesitantly reached up and put his hand under Starlight’s muzzle. Starlight blushed at this and neighed with delight. “Ah, that’s sweet of you.” She leaned forward into Anon. This act caused him to stumble from her now not insubstantial mass. She whispered in his ear, her fur tickling his cheek. “It’s okay. The spell is working. No red aura, see!” She tittered and pulled back. “Anyway, let’s get moving. We don’t want to be late.” Starlight started trotting down the street, oblivious to everypony swerving wide to avoid her.

Anon fell back and leaned over to whisper to Trixie. “What the hay happened to her?” Trixie had taken out her cookies and popped one into her mouth. She spoke around crumbs, “Hmph, Trixie doesn’t know. One minute, we were shopping, then the next Starlight seemed upset over something. Then she just grew.” Trixie loudly swallowed the cookie and popped another one in before adding. “Strange, right?”

Anon was speechless. Hopeless. Both of these girls were utterly hopeless. Straightening up, he determined to focus on head pats and cuddle time with Fluttershy. If he had that, he could handle these loony ponies.

The trio reached the school without major incident.

“Oh thank heavens you ma…oh my you’re big!” Miss Cheerilee broke off as she looked up at the towering Starlight Glimmer. Starlight blinked for a moment than leaned forward. “Yeah, I know Anon’s kindof strange, but,” she put her hoof up to her muzzle and whispered, “it’s really not nice to point something out like that.” The smaller pony was frazzled by this. Was this mare not aware she was enormous? She then noticed the human standing to Starlight’s side. Anon was making a cutting motion with his hand at his neck. Cheerilee understood. Whatever was happening, best to ignore it. “Of course.” She winked at Starlight who giggled and winked back. She trotted around the smaller mare.

"So who’s ready for a…tea party?” Starlight trailed off as she noticed the foals where all crying and sniffing. “It’s okay,” she stumbled out as she moved to stand over the table. Seeing this giant mare the foals squeaked and one fell out of her chair. “It’s okay. Look! We brought the cookies!” Starlight held up what in her hoof was a laughably small bag and gave a big, fake grin.

“That’s not it,”Cheerilee came up to her and put her hoof on Starlight’s big leg. “The clownpony had to cancel. The kids were really looking forward to his performance.” Starlight’s ears drooped. Then she had an idea. Without thinking, she stepped over Cheerilee and trotted over to Trixie. “Trix, you hear that?” She looked down at her best friend who was eyeing her suspiciously. “Yeah,” Trixie took out the last cookie from her box popped it into her mouth. “Soooo, they need someone to entertain the foals. You have your magic act.” Starlight waggled her eyebrows suggestively.

Trixie choked on her cookie. *Cough* "What? Starlight, Trixie’s shows are not half baked. She plans them to the last detail.” She raised a hoof to wipe away the cookie crumbs on her mouth. “Besides, Trixie doesn’t have any of her stuff. Sorry, nothing I can do.” Starlight felt as if her head was going to explode. Why? Why did Trixie have to make everything soooo difficult?

During the friends exchange, Anon had moved to comfort Cheerilee who was having a bit of trouble with nearly being crushed by a thoughtless giant mare. Giving her a headpat was nothing like Flutters, but it wasn’t terrible. Had he not been distracted and instead been paying attention he would have seen the ominous red glow coming from Starlight.

"S-Sure Trix, i under-understand.” Starlight’s right eye was twitching as she bottled up her rage.

“Glad you agree. Really, that clown pony must be very inconsiderate.”

At Trixie’s thick headedness Starlight’s rage boiled all the hotter. Her body began to expand rapidly in spurts. It would shudder and grow. Shudder, grow. Trixie watched in horror as her friend rapidly stretched into the air above her. Starlight’s udders plumped and extended further as her flank and legs pumped up with fat and muscle. Her mane lengthened and her horn extended into the air. In Trixie’s mind, she began to think. Was Starlight growing when someone upset her?

“Uh…on second thought, Trixie believes she can do something after all. Yay?”

Starlight’s body shuddered and grew one more time before finally stopping.

“Oh Trixie,” She exclaimed loudly. Without warning, Starlight picked up the tiny mare and brought her to her face. Trixie’s body fit perfectly on Starlight’s enormous hoof. “Thank you, I knew you’d help!” She nuzzled her friends whole body with her enormous muzzle. Trixie staggered, but just forced a smile and tried not to let her terror show.

However, this brief respite was not to last. “Hey, that mare’s just grew!” One of the foals was pointing at Starlight!

Anon turned at the exclamation, dreading what he'd see. He wasn't disappointed. Starlight was enormous, towering over the school house, the foals, their table, him, and Cheerilee. He numbly moved to the pillar of Starlight’s leg. Their sizes from early in the morning had completely reversed!

"Huh?" Starlight, meanwhile was thoroughly confused by the foal's words. She closed her eyes and rocked her head back and forth. What was the foal talking about? Growth? That was...

She lowered Trixie down to the grass and massaged her head with her hooves. Why did everything seem so off???

"Uhm...Hey! Brats!" Trixie didn’t understand what was going on. But she sensed Starlight was in a delicate point and it was best not to point out the obvious. She took off her hat and standing on her hind hooves she waved it in front of her dramatically. "Watch," she continued as the foals refocused on her. "As the Great, the Powerful, the Amazing Trixie will now...er....pull a tea cup from her hat!" The foals ooo'ed and watched her raptly. Now she just had to pull off that teleportation magic Starlight taught her!

Behind her, Anon was stroking Starlight's fur above her hoof and trying to keep her calm. He was failing. She was shivering as the part of the spell that had made her unable to tell something was wrong started to unwind. "I'm not big, the world's small?"

"Nothing up my sleeves, nothing in my hat." Trixie showed her empty hat and empty sleeves to the foals. "Butttt wait? Hocus Pocus annnnndddddd....Ta da?" She hopefully reached into her hat to pull out what she hoped was a tea cup. Instead, in her hoof was a spoon. Despite her clear error, the foals were pleased. They giggled and clapped. Trixie smiled. She was still the greatest.

Behind her, Starlight was doing less well. "Look at Trixie. I'm over here, clearly having problems and she….” Starlight’s eyes flared red, “…doesn’t even notice the trouble I'm going through!” Her whole body burst with red aura. It seeped onto the school lawn and around everyone.

Anon backed away. "Cheerliee, grab the foals and get as far away as you can!" He shouted then turned and ran over to Trixie. Bending over he picked her up. "Ooof, hey!" Anon wasn't even listening to her protests. He had a sinking suspicion that things were going to get really bad.

Starlight was rapidly growing, her body digging up dirt and grass into the air as she around her.

***RRRRRUUUUUMMMBBBLLLLLEEE*

“WHY ARE YOU SO SELF ABSORBED!” Starlight screamed as she threw her fore legs into the hair wildly. Anon and the ponies winced as her now resonant voice made their bones rattle. The windows on the school house shattered. Behind them, the giant mare was a fearsome sight. Her fur and mane were standing on end as the red glow surrounding her sparked wildly.

Then, it was over. The aura disappeared. She had released all the pent up negative emotions that had been making her grow. She sighed in relief. “Whew! That feels soooo much….better?” She trailed off. Something was wrong here. Why was everything so small? “Anon? Trixie?” Starlight started hyperventilating.

Anon groaned. Trixie looked up at him from her position on his forearm. “What’s wrong? Starlight’s back to her senses, that’s a good thing.” Anon gave her a miserable look. As if on cue, Starlight, completely overwhelmed from realizing she was gigantic, fainted. Her unconscious body wobbled a little then fell forward. Her massive bulk crushed the foals’ tea table, snacks, and adding insult to injury Starlight took out the school house too. Starlight’s thoroughly thickened rump jiggled after her fall.

Finally breaking himself away from the spectacle, Anon braced himself for the foals reaction. A small one with braces spoke up. “Hey girls, does this mean no school?” They blinked for a moment then broke out into cheers.

“Wow. You know, you should really think about what Starlight said Anon,” Trixie had opened her cracker box and put one into her mouth. “If you didn’t make her so mad this wouldn’t have happened.” For a moment, a small moment, Anon just looked at her. Then bending over he started pinching and pulling on her fur, mane, and snout. “Wh-at? Hey. Cut it out. Was it something Trixie said?”