Bad Reputation (2006)

"Bad Reputation" is a high school horror/revenge movie that tells the story of Michelle Rosen, a pretty but plain high school student who is treated as an outcast at her suburban school. She doesn't wear the right clothes, doesn't have expensive brand-name accessories and doesn't have much luck with boys, even though she's actually quite attractive. Michelle is delighted, therefore, when Aaron, a handsome, popular jock, invites her to a party at his house. Michelle splurges and buys a new dress for the party and looks great when she arrives there. A number of boys notice her, and she also attracts the unwanted attention of Debbie, Aaron's popular girlfriend who (along with her friends) is a little miffed that the guys all seem to be drooling over Michelle. But, oh, how they would express their jealousy. And, oh, how she would have her revenge.