This is Cassie. She has to wear this uniform because of her contact with a liquid shifter during a Halloween party (she went as one of her super hero characters she made up). Cassie didn't know that a living goo creature crept into her home and later coming into contact with her and take her form but give her control of her body and form. The goo seemed to be able to communicate with Cassie using her thoughts and knowledge to be able to talk to her through her mind using a softer version of her voice. Interesting experience but it came with one rule. Never to lose mass. Doing so will result in uncontrolled liquefaction. That means if she removed any article of clothing, her body will slowly liquify into a thick goo including the separated article of clothing and join together. Then she will reform and gain control of her abilities again.

in this scene you notice she is not wearing her stockings. Here's what happened:

After taking her stockings off, Cassie instantly became weak. She tried walking to her bed to rest but only managing to get only a few feet only to feeling weak to the point where she was brought to her knees. Her body becomes heavy as if the gravity was increasing around it. Her stomach growled as her insides slowly liquefy She grasps her stomach rubbing it. Her ability to become liquid was starting without her control. She feels her hands tingling and she looks down at her stomach pulling one hand away to see a string of goo going from her finger tips to her chest. Her eyes widen as she notices a black puddle forming beneath her. Her tail dropped as it was weighed down by the melting fur that merged with the puddle and oozed over her legs and feet. Her legs became numb as they dissolved into the puddle, her body sinking and her fur melting oozine down her body. The skin soon fallows and all she could do was watch in fear looking around breathing heavily moaning at her discomfort as she sinks into her churning liquid. She gets a feeling like no other as her lower waist merges with the puddle. She puts what remains of her hands together and moves them down in between her legs as they succumbed to the gravity her upper body soon fallowed slunched forwards her muzzle being able to collide with the goo below. She lets out one soft whimper she her muzzle fused with the ground. She let out her final breath bubbling under her deforming oozing muzzle in a heap of goo that was once her two thighs showly flattening out ike a leaking water balloon and her upper body merged with the mass of goo sinking into an expanding puddle of her goo. Churning and gurgling, the mass of goo disappeared into the puddle of black and purple goo that was once her body. The boots soon fallowed and melted down into a purple puddle. The two puddles soon collide and Cassie became solid once more. Now knowing that she has to wear her costume anywhere she went. She never should have gotten so curious. Stumbling across a goo creature looking for a host in order to become solid and entering her body through her ears before she could take off her costume. Lesson learned..... but at the wrong time.