How old was Mary Stuart Masterson in The Book of Stars?

There’s something captivating about discovering a celebrity’s age during a defining role. That kind of trivia can make the viewing experience even richer. Here’s the age that matched the moment.

The age of Mary Stuart Masterson while starring in The Book of Stars was:

32 years old

That’s the confirmed age we calculated for the celebrity in that role.

This age was calculated based on the beginning of the release year of The Book of Stars:

January 1, 1999

And the birth date of Mary Stuart Masterson:

June 28, 1966

Given that most films are released within a year of production, the actual age of Mary Stuart Masterson during filming may have varied by one year from the shown age.