Mary-Louise Parker was 22 in Too Young The Hero when she played the character 'Pearl Spencer'.
That was over 36 years ago in 1988.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 59, and has starred in 55 movies in total, 52 of those since Too Young The Hero was released.
In Too Young The Hero, I think Mary-Louise Parker looks: