Cameron Diaz was 20 in The Mask when she played the character 'Tina Carlyle'.
That was over 28 years ago in 1994.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 50, and has starred in 61 movies in total, 59 of those since The Mask was released.
In The Mask, I think Cameron Diaz looks: