
My Stepmother Is an Alien
Trying to rescue her home planet from destruction, a gorgeous extraterrestrial named Celeste arrives on Earth and begins her scientific research. She woos quirky scientist Dr. Steve Mills, a widower with a young daughter. Before long, Celeste finds herself in love with Steve and her new life on Earth, where she experiences true intimacy for the first time. But when she loses sight of her mission, she begins to question where she belongs.
Release Date: 1988-12-09
Comedy
Science Fiction
★★★★★★★★★★ (533 votes)
Casts

Dan Aykroyd
as Steven Mills

Kim Basinger
as Celeste Martin

Jon Lovitz
as Ron Mills

Alyson Hannigan
as Jessie Mills

Joseph Maher
as Lucas Budlong

Seth Green
as Fred Glass

Ann Prentiss
as The Voice of the Bag (voice)

Wesley Mann
as Grady

Tony Jay
as Council Chief

Peter Bromilow
as Second in Command