Real age of Anna Paquin in X-Men: The Last Stand
In the movie X-Men: The Last Stand, Anna Paquin was:
23 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 X-Men: The Last Stand was released:
January 1, 2006
And the day in which Anna Paquin was born:July 24, 1982
Since movies usually don't take more than one year to be released since the beginning of the filming process, Anna Paquin may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.