Real age of Janet Leigh in Houdini
In the movie Houdini, Janet Leigh was:
25 years old
That was the real age of the celebrity according to our calculation.
The calculation of the shown age took into account the first day of the year in which the movie Houdini was released:
January 1, 1953
And the day in which Janet Leigh was born:July 06, 1927
Since movies usually don't take more than one year to be released since the beginning of the filming process, Janet Leigh may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.