Real age of Katy Perry in Alvin and the Chipmunks: The Squeakquel
In the movie Alvin and the Chipmunks: The Squeakquel, Katy Perry was:
24 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 Alvin and the Chipmunks: The Squeakquel was released:
January 1, 2009
And the day in which Katy Perry was born:October 25, 1984
Since movies usually don't take more than one year to be released since the beginning of the filming process, Katy Perry may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.