Real age of Jennette McCurdy in The Death and Return of Superman
In the movie The Death and Return of Superman, Jennette McCurdy 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 The Death and Return of Superman was released:
January 1, 2011
And the day in which Jennette McCurdy was born:June 26, 1992
Since movies usually don't take more than one year to be released since the beginning of the filming process, Jennette McCurdy may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.