Virginie Ledoyen was 8 in Exploits of a Young Don Juan when she played the character 'Berthe'.
That was over 38 years ago in 1986.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 47, and has starred in 45 movies in total, 44 of those since Exploits of a Young Don Juan was released.
In Exploits of a Young Don Juan, I think Virginie Ledoyen looks: