Real age of Julie Andrews in Thoroughly Modern Millie
In the movie Thoroughly Modern Millie, Julie Andrews was:
31 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 Thoroughly Modern Millie was released:
January 1, 1967
And the day in which Julie Andrews was born:October 01, 1935
Since movies usually don't take more than one year to be released since the beginning of the filming process, Julie Andrews may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.