Lorelei (1985)

Lorelei is a lingerie designer and the owner of Lorelei Fashions. After having sex with Greg, she offers him a job. Lane Le Fleur is Lorelei's competitor. Lane and Greg sleep around with Lorelei's assistant Margo as well as with the models Kirsten, Tina, Lucinda, Charnelle and Margarite. Lane then enlists his friend Dirk to steal Lorelei's designs, but Lorelei distracts them both with sex.