Julia Louis-Dreyfus was 24 in Troll when she played the character 'Jeanette Cooper'.
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 63, and has starred in 39 movies in total, 35 of those since Troll was released.
In Troll, I think Julia Louis-Dreyfus looks: