

My Stepmother Is an Alien (1988)
She's gorgeous, and she's never been kissed. Needless to say, she's from another planet.
Plot Summary
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.
Full Cast & Characters

Dan Aykroyd
Steven Mills

Kim Basinger
Celeste Martin

Jon Lovitz
Ron Mills

Alyson Hannigan
Jessie Mills

Joseph Maher
Lucas Budlong

Seth Green
Fred Glass

Ann Prentiss
The Voice of the Bag (voice)

Wesley Mann
Grady

Tony Jay
Council Chief

Peter Bromilow
Second in Command

Nina Henderson
Cashier

Harry Shearer
Carl Sagan (voice)
Director & Crew
Richard Benjamin
Director
Official Trailer

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Frequently Asked Questions
Where can I watch My Stepmother Is an Alien online?
My Stepmother Is an Alien (1988) is available to stream on various platforms. You can also watch it online via our Watch Online button.
What is the IMDb rating of My Stepmother Is an Alien?
It has an IMDb rating of 5.8/10 based on 579 votes.
Who directed My Stepmother Is an Alien?
My Stepmother Is an Alien was directed by Richard Benjamin and released in 1988.
How long is My Stepmother Is an Alien?
My Stepmother Is an Alien has a runtime of 1 hours and 48 minutes.
Movie Details
- Release Date
- 1988-12-09
- Budget
- $20.0M
- Box Office
- $13.9M
- Status
- Released





