Mariska Hargitay was 20 in Ghoulies when she played the character 'Donna'.
That was over 39 years ago in 1985.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 60, and has starred in 26 movies in total, 25 of those since Ghoulies was released.
In Ghoulies, I think Mariska Hargitay looks: