Directed by Nathan Juran
Written by Mark Hanna
IMDB

A boozed up woman sees a tall alien while she's doing the great American pastime of driving drunk. Her husband, a serial adulterer (I don't know if that's true, but it's a good phrase), does not believe her. Somehow she ends up being 50 feet tall, herself--maybe radiation.
A classically terrible film. It's pretty fun and very short (65 minutes). Worth a watch, but don't expect more than a few minutes of the 50 foot tall woman.

6/10