Colleen Camp was 19 in Battle for the Planet of the Apes when she played the character 'Julie'.
That was over 51 years ago in 1973.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 70, and has starred in 119 movies in total, 115 of those since Battle for the Planet of the Apes was released.
In Battle for the Planet of the Apes, I think Colleen Camp looks: