Dorothy Diane "Dedee" Pfeiffer (born January 1, 1964) is an American actress, the younger sister of Michelle Pfeiffer. She began her career appearing in films include Vamp (1986), The Allnighter (1987) and The Horror Show (1989). Pfeiffer later starred as Cybill's daughter, Rachel, in the CBS sitcom Cybill (1995-1997)