Inside was a pair of white panties with pink pok a dots. They looked like they were made for a 3 year old. You give a small sniff, they smelt new?
You blush and press the button again, but nothing comes out. You figured it probably only worked once. Sighing you pick up the pok a dot panties. You don’t know why but you slid your legs in and brought the tight fabric up to your crotch. You don’t know why, but having the thin fabric cradled your balls felt kinda... nice.
You felt the skin suit shudder as it worked out how to change you. First the body suit got tighter. A lot tighter. The suit began crushing your body all over. Your hands and feet shrink down. Your shoulders round out, your arms get skinnier along with your legs. You feel a crushing pain in your chest as your torso shrinks. You keep getting smaller and smaller, as you shrink your skin also changes. It becomes paler, your scars heal them selves, and your body hair is sucked into your body giving you smooth young skin.
The crushing reaches it’s peak in your crotch and you try desperately to unzip the back but fail before it’s too late. The pain melts away into pleasure and you stop trying to resist the changes. You were officially now a girl.
Your hair turns light brown and grows long and straight down your back. The final changes start, fat that had been squeezed by the suit starts to redistribute it self. Your face becomes rounder and more cute. Your arms and legs are still thin, but a small amount of fat is added, same goes for your stomach, giving you a little baby fat on your belly that wasn’t uncommon for girls your age. What was uncommon was how much of the fat collected in your rear, giving you a slightly larger than normal for your age ass.
The changes seamed to have stopped and you let out a sigh of relief.
You run over to the mirror naked except for the panties and stop once you see your reflection.
Standing before you was a brown haired 4- 5 year old girl in white panties with pink pok a dots. You were a third your former height, you examine your slightly round face, looking for traces of your old self, nothing that was you remained, even your eyes were a new color.
You look over your new body, you couldn’t find anything wrong with your new form. You have some baby fat particularly in the hips, but that was normal for a child your age.
Then looking on the back you saw it. A long grey metal zipper going down your spine. THAT definitely wasn’t normal. You briefly considered pulling it to see what was inside but stop your self. Was that really safe? What would happen? Maybe it was just for emergencies. Still, it looked so odd seeing a 5 year old girl with a zipper going down her spine. But maybe you could cover it some how. And maybe it was best to have a reminder of who you were.
You look at the zipper still mesmerized by how odd it truly was. Your eyes every trail down to your pink pok a dot clad butt getting distracted and you do a little shake giggling in your new voice.