The brother and sister walk into the fitting room, both looking through the clothing racks. The sister, Amy, grabs a prom dress and heads to the changing room. She enters and begins to try on the satin dress. The brother, Mark, waits outside the door, peeking in to watch his sister undress. As Amy starts to take off her shirt, Mark sees the outline of her breasts through the thin fabric of her bra. He gets an erection, unable to look away. He knows he should leave the room, but he's too caught up in the moment. Amy senses that someone is watching her, but she can't see who. She keeps trying… Read more