It took some hard work and sneaking around, but Dash couldnt be happier with the results. As she looked into the mirror, there she was, in a full blown Official Wonderbolts Suit. The tight fabric hugged every curve of her body as she twisted and turned in it looking all around, from her fit legs, to her tight and fit rump. She was all full of smiles and more at the sight.
 
As she began to move away from the mirror though, she heard a faint hissing noise in her room. Her ears flicked as she tried to find out where it was coming from. But it was odd. It almost sounded like it wasin her.
 
Soon enough, Dash started to feel a bit uncomfortable in the new found suit. As she looked to the mirror, she could see why now. Her eyes grew wide as she saw her small fit stomach ballooning outward and downward, growing with size slowly, but fully. She reached down to her belly and pushed at with a hoof, and to her surprised and shock, she was able to dig into it deeply, as if nothing was in it, but it definitely was getting bigger and faster too. She soon realized the hissing sound, it WAS within. She was blowing up like a balloon.
 
As the panic began to settle, Dash knew she had to get help, fast. But, as she took a step to get to the door, she suddenly fell over onto her face with a thump. As she shook her head, she felt herself begin to rise slowly. Her belly was starting to get really big now, as it now began to take a more spherical shape. And it was slowly lifting her up, which caused her fall. She was getting lighter by the second. Dash tried to fight the weightlessness with her wings, but to no avail. Then she got an idea. Maybe, she could burp the gas out. As she tried it though, she suddenly heard a loud grown. Looking behind her. Her gut now wasnt the only thing growing. Now, her two flanks were ballooning up, with a fast pace, trying to catch up to her beach ball of a gut. Her suit strained now, trying to hold in a balloon of a pony 2x too big for it now. Dashs eyes went even smaller now seeing herself becoming more and more like a blow up toy, and again tried to make it for the door. But as she reached, something even worse started
 
As she watched, her own legs now were beginning to blow up slowly, but surely. They were actually getting rounder and softer to the touch. Along with making it hard to reach, or, do anything now. Now Dash was floating in her room, her belly now looking more like a small bounce house, and her rump like two giant fluffy cushions of air. The suit was really beginning to feel the strain of holding her in, the fabric groaning and stretching to limits it had never known due to her sudden new shape. Dash meanwhile, was at a fluster of what to do. Her front hooves were useless. Her back legs were better off for safety cushions. Her belly would be keeping her OFF the ground itself if not for the floating part. She couldnt do anything but sit there in the air, filling up more, and more, and more.
 
Then, suddenly, a giant growth spurt happened. With a loud hiss, Dashs entire body filled over twice as fast. Her belly ballooned out even further than before, pushing back her back legs, and up her front ones, so they were just sitting there, as it grew and grew and grew. Her rump, not wanting to be shown off, picked up in the wideness, doubling over what they were before, each one likely able to hold two ponies on them, each, comfy as can be as if on an air bed. Her front hooves were now more so safety pool floaties, pushed to a whole new level about the size, or bigger, than her own head. And her neck, now, also began to fill up, pushing all around her as it filled up with air, too, making it look as if she had no neck to begin with. More and more air was filling the cyan balloon of a pony, until.
 
RIIIIIIIIP. The suit gave out. IT had enough. It couldnt take it. There was just too much to handle. Here and there, spots formed where the fabric tore open, slits long and wide along her belly, rump, and more. But the suit couldnt get itself off fully. Only allowing some relief, as Dashs blue fur poked out through these holes, some of them in deeper fashions, with bigger holes, while other parts fought against small threads still bound and fighting to be the tight suit it was. All the while, Dash just floated there, her face red, and looking as if she gave up. There was nothing she could do but get bigger. At least she didnt feel shed pop. With the new rips, it gave some relief to the balloon Pegasus. Now all she worried about was if it would stop soon enough.
 
Though, deep inside that flustered red face of a mare
 
There was a hint she actually loved the feel of being a new float for the Wonderbolts, and now wondered if she could use this as a ticket to get in