Real age of Kurt Russell in It Happened at the World's Fair
In the movie It Happened at the World's Fair, Kurt Russell was:
11 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 It Happened at the World's Fair was released:
January 1, 1963
And the day in which Kurt Russell was born:March 17, 1951
Since movies usually don't take more than one year to be released since the beginning of the filming process, Kurt Russell may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.