Real age of Mary-Kate Olsen in When in Rome
In the movie When in Rome, Mary-Kate Olsen was:
15 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 When in Rome was released:
January 1, 2002
And the day in which Mary-Kate Olsen was born:June 13, 1986
Since movies usually don't take more than one year to be released since the beginning of the filming process, Mary-Kate Olsen may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.