Real age of Mischa Barton in The Sixth Sense
In the movie The Sixth Sense, Mischa Barton was:
12 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 Sixth Sense was released:
January 1, 1999
And the day in which Mischa Barton was born:January 24, 1986
Since movies usually don't take more than one year to be released since the beginning of the filming process, Mischa Barton may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.