Real age of Thora Birch in Petunia
In the movie Petunia, Thora Birch was:
29 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 Petunia was released:
January 1, 2012
And the day in which Thora Birch was born:March 11, 1982
Since movies usually don't take more than one year to be released since the beginning of the filming process, Thora Birch may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.