Real age of Katherine Moennig in Invitation to a Suicide
In the movie Invitation to a Suicide, Katherine Moennig was:
26 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 Invitation to a Suicide was released:
January 1, 2004
And the day in which Katherine Moennig was born:December 29, 1977
Since movies usually don't take more than one year to be released since the beginning of the filming process, Katherine Moennig may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.