Eileen Brennan was 33 in The Star Wagon when she played the character 'Hallie'.
That was over 58 years ago in 1966.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
In 2013 she died aged 80, starring in 67 films in her career, 65 of those after The Star Wagon was first released. If she were alive today she would be 91.
In The Star Wagon, I think Eileen Brennan looks: