Scum of the Earth (1963)

The early Herschell Gordon Lewis flick Scum of the Earth is notable for being, like most of Lewis' films, a cautionary tale for young, innocent, and naive women. In this case, it's Sandy Sinclair who finds herself trusting the wrong guy, a photographer, who convinces her to pose topless for him. It all backfires on her and she is immediately exploited, but we do get a nice quick look at her breasts!