Real age of Jane Fonda in Old Gringo
In the movie Old Gringo, Jane Fonda was:
51 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 Old Gringo was released:
January 1, 1989
And the day in which Jane Fonda was born:December 21, 1937
Since movies usually don't take more than one year to be released since the beginning of the filming process, Jane Fonda may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.