Death Becomes Her (1992)
Madeline is married to Ernest, who was once arch-rival Helen's fiance. After recovering from a mental breakdown, Helen vows to kill Madeline and steal back Ernest. Unfortunately for everyone, the introduction of a magic potion causes things to be a great deal more complicated than a mere murder plot. jealousy, immortality, beauty, rivalry, potion, drinking, biting, playful, amused, mean spirited, sardonic
ETC.
