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My Stepmother Is an Alien (1988)

PG-13  |   |  Comedy, Romance, Sci-Fi  |  9 December 1988 (USA)
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Ratings: 5.2/10 from 20,213 users  
Reviews: 53 user | 15 critic

An alien is sent on a secret mission to Earth, where she appears as a gorgeous, attractive, and single lady. Her mission is to make contact with a rather nerdy young scientist, who's quite ... See full summary »


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Cast overview, first billed only:
Ann Prentiss ...
The Voice of Bag (voice)
Council Chief
Peter Bromilow ...
Second in Command
Nina Henderson ...
Carl Sagan (voice)
Dr. Morosini
Tanya Fenmore ...


An alien is sent on a secret mission to Earth, where she appears as a gorgeous, attractive, and single lady. Her mission is to make contact with a rather nerdy young scientist, who's quite overwhelmed by her attentions, and isn't aware of the connection between her arrival and his work. Written by Murray Chapman <>

Plot Summary | Add Synopsis


Man's closest encounter See more »


Comedy | Romance | Sci-Fi


PG-13 | See all certifications »

Parents Guide:





Release Date:

9 December 1988 (USA)  »

Also Known As:

Mi novia es una extraterrestre  »

Filming Locations:


Box Office


$20,000,000 (estimated)


$13,854,000 (USA)

Company Credits

Show detailed on  »

Technical Specs


Sound Mix:


Aspect Ratio:

1.85 : 1
See  »

Did You Know?


Shelley Long was originally cast as Celeste. See more »


When Celeste is at Ron's party after she first arrives on earth, she does some backflips. While she's doing that, her purse is stuck on her side, then the camera changes angles and her purse isn't on her at all. After she's done her backflips, her purse is back on her shoulder again. See more »


Alien leader: Earthmen will fall to their knees, betray their country and give away valuable real estate for a desirable woman.
See more »

Crazy Credits

The opening title scrolls across a backdrop of the galaxy. The end credits show Jessie playing basketball with her family, and Jon Lovitz on Celeste's spaceship, playing the piano surrounded by members of the 12th Navigational Command. See more »


Features Brideless Groom (1947) See more »


I'm Popeye The Sailor Man
Written by Samuel Lerner (as Sammy Lerner)
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Frequently Asked Questions

See more (Spoiler Alert!) »

User Reviews

Great! What are you all talking about?
15 August 2001 | by (California) – See all my reviews

I'm wondering if everyone who reviewed this was watching the same film that I've seen because there is no way this movie can "endanger your mental growth." This movie is great! It's got a funny script and an interesting storyline...I don't know if people were expecting some kind of "Close Encounters of the Third Kind" challenger, but you all need to see this movie for what it is...somehow I doubt it was meant to deliver some deep message about society or help you delve into your's a comedy that is meant to entertain! Lighten up, people....

38 of 40 people found this review helpful.  Was this review helpful to you?

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