Real age of Christian Serratos in Mrs. Marshall
In the movie Mrs. Marshall, Christian Serratos was:
13 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 Mrs. Marshall was released:
January 1, 2004
And the day in which Christian Serratos was born:September 21, 1990
Since movies usually don't take more than one year to be released since the beginning of the filming process, Christian Serratos may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.