Real age of Mary Pickford in Muggsy's First Sweetheart
In the movie Muggsy's First Sweetheart, Mary Pickford was:
17 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 Muggsy's First Sweetheart was released:
January 1, 1910
And the day in which Mary Pickford was born:April 08, 1892
Since movies usually don't take more than one year to be released since the beginning of the filming process, Mary Pickford may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.