Carol Kane was 18 in Carnal Knowledge when she played the character 'Jennifer'.
That was over 53 years ago in 1971.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 71, and has starred in 112 movies in total, 111 of those since Carnal Knowledge was released.
In Carnal Knowledge, I think Carol Kane looks: