Just One of the Girls(1993)

Overview:

To save himself from the biggest bully in school, Chris Calder has to dress himself up like a girl to avoid Curt. When the disguise works, he is forced to stay a girl - with disastrous results. Curt falls for the new girl in school while Chris falls for the bully's sister, a beautiful blonde cheerleader. High school is hard enough without worrying if your wig is on straight. Chris soon find out he can't hid in his sister's skirts. But is he man enough to reveal his secret and fight for the girl he loves?