Caterina Murino was 23 in The Young Casanova when she played the character 'Zanetta'.
That was over 22 years ago in 2002.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 46, and has starred in 39 movies in total, 36 of those since The Young Casanova was released.
In The Young Casanova, I think Caterina Murino looks: