Real age of James Marsden in Superman Returns
In the movie Superman Returns, James Marsden was:
32 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 Superman Returns was released:
January 1, 2006
And the day in which James Marsden was born:September 18, 1973
Since movies usually don't take more than one year to be released since the beginning of the filming process, James Marsden may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.