In her student housing room.

Karen was one of the few people that were lucky enough to get student housing. That meant that she didn't have to walk long distances to get to school, and it aided her plan a little, or rather, a lot.

She picked out her outfit, deciding not to go for anything fancy; a slightly loose white hoodie that could cover up her lack of bra, and a pair of jeans that could make it look like she was wearing panties underneath, even if she wasn't.

But, to be safe, she did take out a bra and a pair of panties to wear after she'd done her streaking. Both plain pink in color. As she stashed her undergarments in her school bag, with her books, she walked to school, feeling the lightness of her genitalia, her public hair brushing against the fabric.