How old was Kirstie Alley in Sibling Rivalry?

Have you ever watched a movie and found yourself curious about a celebrity’s age at the time? That kind of trivia can make the viewing experience even richer. We’ve got the answer you’ve been looking for.

In the movie Sibling Rivalry, Kirstie Alley was:

38 years old

According to our findings, that was the correct age of the celebrity.

Our method involved using the first calendar day of the release year of Sibling Rivalry:

January 1, 1990

And the birth date of Kirstie Alley:

January 12, 1951

Because movies often premiere within a year of starting production, Kirstie Alley might have been either one year younger or older while filming some scenes.