Marquis de Sade's Justine (1977)

Justine is a nubile young virgin cast out of a French orphanage and thrust into a depraved world of prostitution, predatory lesbians, a fugitive murderess, bondage, branding, and one supremely sadistic monk. It's a twisted tale of strange desires, perverse pleasures and the ultimate corruption of innocence as told by the Marquis de Sade.