Real age of Joan Crawford in The Duke Steps Out
In the movie The Duke Steps Out, Joan Crawford was:
22 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 The Duke Steps Out was released:
January 1, 1929
And the day in which Joan Crawford was born:March 23, 1906
Since movies usually don't take more than one year to be released since the beginning of the filming process, Joan Crawford may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.