Real age of Joanna Lumley in James and the Giant Peach
In the movie James and the Giant Peach, Joanna Lumley was:
49 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 James and the Giant Peach was released:
January 1, 1996
And the day in which Joanna Lumley was born:May 01, 1946
Since movies usually don't take more than one year to be released since the beginning of the filming process, Joanna Lumley may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.