Eva Green was 20 in The Piano Teacher when she played the character 'La Petite amie de Walter (uncredited)'.
That was over 23 years ago in 2001.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 43, and has starred in 29 movies in total, 28 of those since The Piano Teacher was released.
In The Piano Teacher, I think Eva Green looks: