Fred was waiting outside the bathroom. Never before had he had been so interested in a prank, even one of his own. Seeing the door to the bathroom open, he chuckled when a 17 year old girl walked out in only a towel. Considering the fact he had made all of her clothes disappear, she was taking it surprisingly well. When he had done the same thing to Ginny a while ago, she had crawled out the window and up to her room.
He barely noticed when a very calm (unusual considering her current predicament) Hermione took a wand from behind her back and muttered a small spell under her breath. He only realized what had happened when he looked down and found himself in a small towel and Hermione in his sweatshirt and jeans.
Laughing out loud, Hermione walked into her room, leaving a blushing Fred in the hall for her friends to discover.