Real age of Diane Lane in Rumble Fish
In the movie Rumble Fish, Diane Lane was:
17 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 Rumble Fish was released:
January 1, 1983
And the day in which Diane Lane was born:January 22, 1965
Since movies usually don't take more than one year to be released since the beginning of the filming process, Diane Lane may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.