Real age of Carrie Fisher in The Blues Brothers
In the movie The Blues Brothers, Carrie Fisher was:
23 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 Blues Brothers was released:
January 1, 1980
And the day in which Carrie Fisher was born:October 21, 1956
Since movies usually don't take more than one year to be released since the beginning of the filming process, Carrie Fisher may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.