Witches' Brew (1980)
Witches' Brew (also known as Which Witch Is Which?) is a 1980 horror comedy film directed by Herbert L. Strock (additional sequences) and Richard Shorr who co-wrote screenplay with Syd Dutton. It was based (though without any screen credit) on Fritz Leiber Jr.'s novel Conjure Wife. Witches Brew is notable for being the final feature film appearance of Lana Turner.
More at Wikipedia.