Real age of Rachel Weisz in Your Sister's Sister
In the movie Your Sister's Sister, Rachel Weisz was:
40 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 Your Sister's Sister was released:
January 1, 2011
And the day in which Rachel Weisz was born:March 07, 1970
Since movies usually don't take more than one year to be released since the beginning of the filming process, Rachel Weisz may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.