Real age of Diana Ross in The Land Before Time
In the movie The Land Before Time, Diana Ross was:
43 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 Land Before Time was released:
January 1, 1988
And the day in which Diana Ross was born:March 26, 1944
Since movies usually don't take more than one year to be released since the beginning of the filming process, Diana Ross may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.