Alison looked herself over. If she heard her friend correctly, she was currently basically naked. To test this, she put a hand on her blouse. It felt effectively like a blouse, until she pulled on it. She felt the tug not only from her hand, but some unidentified part of her body as her blouse, which was a part of her, sent messages back to her brain telling her that something was pulling on her blouse. She played with the sleeves a bit, and even pulled on her skirt, which she found to be connected to her skin now. And then she reached a bit further in...
She was wearing panties. The disguise had included special panties that helped to hide her former masculinity, just as Joy's had... but now that masculinity was gone... but the panties remained. For that she was somewhat glad, but still...
"Joy? How do we use the restroom? Can we take our panties off?"
Joy laughed nervously, "Ahahaha, well, that's a funny story!"