Real age of Hayden Panettiere in Scooby-Doo and the Goblin King
In the movie Scooby-Doo and the Goblin King, Hayden Panettiere 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 Scooby-Doo and the Goblin King was released:
January 1, 2008
And the day in which Hayden Panettiere was born:August 21, 1989
Since movies usually don't take more than one year to be released since the beginning of the filming process, Hayden Panettiere may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.