Olivia d'Abo was 14 in Conan the Destroyer when she played the character 'Princess Jehnna'.
That was over 40 years ago in 1984.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 55, and has starred in 57 movies in total, 57 of those since Conan the Destroyer was released.
In Conan the Destroyer, I think Olivia d'Abo looks: