Witch Academy (1993)

aka: Little Devils

A nerdy college girl (Veronica Carothers) attempts to join a sorority where the sisters continually mock and haze her with no intention of actually letting her join. After they chain her up in the basement of their house, Satan (Robert Vaughn) appears to her and turns her in to a sexy vixen with the ability to transform into various monsters and exact revenge upon her would-be sisters. Also with Suzanne Ager, Priscilla Barnes, Michelle Bauer and Ruth Collins.