Real age of Emma Stone in Marmaduke
In the movie Marmaduke, Emma Stone was:
21 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 Marmaduke was released:
January 1, 2010
And the day in which Emma Stone was born:November 06, 1988
Since movies usually don't take more than one year to be released since the beginning of the filming process, Emma Stone may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.