My Stepmother Is an Alien
PG-13“She's gorgeous, and she's never been kissed. Needless to say, she's from another planet.”
1988·108 min·Released
Studio: The Catalina Production Group, Weintraub Entertainment Group
5.8TMDb
Available on
Theatrical Dec 9, 1988Physical Apr 2, 1989
🇺🇸
USA · English · USA
Overview
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.
Trailer
Crew
DirectorRichard Benjamin
Cast
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)
Adrian Sparks
Dr. Morosini
Juliette Lewis
Lexie
Tanya Fenmore
Ellen
Karen Haber
Kristy
Amy Kirkpatrick
Kimberly
Suzie Plakson
Tenley
Robert Benedetti
Drill Sergeant
Jim Doughan
Party Guest
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Keywords
single parentstepmotheralienspoofscientistwidowerlevitationmessage
Details
Budget
$20M
Revenue
$14M
TMDb Votes
577
Added May 14, 2026Updated Jun 3, 2026