

My Stepmother Is an Alien
“She's gorgeous, and she's never been kissed. Needless to say, she's from another planet.”
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.
Where to watch My Stepmother Is an Alien in United States
Click a service to open My Stepmother Is an Alien there. Availability last verified on June 23, 2026.
Where is My Stepmother Is an Alien streaming around the world?
| Country | Streaming on | Rent / Buy |
|---|---|---|
| United States | The Roku Channel, Tubi TV | Amazon Video, Apple TV Store, Google Play Movies |
| United Kingdom | — | Apple TV Store, Rakuten TV, Amazon Video |
| Canada | — | Apple TV Store, Google Play Movies, CosmoGo |
| Germany | — | Apple TV Store, Amazon Video, Google Play Movies |
| France | — | Apple TV Store, Google Play Movies, YouTube |
| Spain | — | Apple TV Store, Rakuten TV, Amazon Video |
| Japan | — | Amazon Video, Apple TV Store, FOD |
About My Stepmother Is an Alien
My Stepmother Is an Alien is a 1988 English-language comedy and science fiction film directed by Richard Benjamin. The cast is led by Dan Aykroyd, Kim Basinger, Jon Lovitz. It has a runtime of 1h 48m. Viewers rate it 5.8/10 across 600 ratings. In United States, it is currently streaming on The Roku Channel, Tubi TV.
My Stepmother Is an Alien was produced by Weintraub Entertainment Group and The Catalina Production Group and made in United States of America. It was released on December 9, 1988, and carries a PG-13 certification. Made on a budget of about $20 million, it went on to gross $14 million worldwide.
- Director
- Richard Benjamin
- Writers
- Herschel Weingrod, Timothy Harris, Jonathan Reynolds
- Release date
- December 9, 1988
- Original language
- English
- Age rating
- PG-13
- Status
- Released
- Country
- United States of America
- Budget
- $20 million
- Box office
- $14 million
- Production
- Weintraub Entertainment Group, The Catalina Production Group
My Stepmother Is an Alien cast & crew
My Stepmother Is an Alien was directed by Richard Benjamin and written by Herschel Weingrod, Timothy Harris, and Jonathan Reynolds.
The cast features 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, and Seth Green as Fred Glass.
Behind the camera, the score was composed by Alan Silvestri, cinematography is by Richard H. Kline, and it was produced by Art Levinson and Franklin R. Levy.
Is My Stepmother Is an Alien worth watching?
My Stepmother Is an Alien holds an audience score of 5.8/10 from 593 ratings, a more divisive comedy films.
At 1h 48m, it's a standard feature-length watch.
If you enjoy comedy and science fiction, My Stepmother Is an Alien is worth a place on your watchlist.
How and where to watch My Stepmother Is an Alien
In United States, you can stream My Stepmother Is an Alien on The Roku Channel and Tubi TV, or rent and buy it on Amazon Video, Apple TV Store, Google Play Movies, and YouTube. Click any service above to open it directly.
Streaming rights change country by country and month by month, so the options above reflect United States today — switch your country at the top of the where-to-watch section to see availability elsewhere.
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Cast of My Stepmother Is an Alien

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)
My Stepmother Is an Alien — FAQs
▸Where can I watch My Stepmother Is an Alien in United States?
My Stepmother Is an Alien is streaming on The Roku Channel, Tubi TV in United States.
▸Is My Stepmother Is an Alien on The Roku Channel?
Yes — My Stepmother Is an Alien is currently available on The Roku Channel in United States.
▸What language is My Stepmother Is an Alien in?
My Stepmother Is an Alien is originally in English. Subtitle and dub options vary by streaming service.
▸How long is My Stepmother Is an Alien?
My Stepmother Is an Alien runs 1 hours 48 minutes (108 minutes).
▸What is My Stepmother Is an Alien rated?
My Stepmother Is an Alien is rated PG-13. It holds a 5.8/10 audience score from 593 ratings.











