Shelley Duvall was 20 in Brewster McCloud when she played the character 'Suzanne'.
That was over 53 years ago in 1970.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 74, and has starred in 61 movies in total, 60 of those since Brewster McCloud was released.
In Brewster McCloud, I think Shelley Duvall looks: