Real age of Kat Dennings in The 40-Year-Old Virgin
In the movie The 40-Year-Old Virgin, Kat Dennings was:
18 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 The 40-Year-Old Virgin was released:
January 1, 2005
And the day in which Kat Dennings was born:June 13, 1986
Since movies usually don't take more than one year to be released since the beginning of the filming process, Kat Dennings may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.