Cybill Shepherd was 20 in The Last Picture Show when she played the character 'Jacy Farrow'.
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 74, and has starred in 56 movies in total, 55 of those since The Last Picture Show was released.
In The Last Picture Show, I think Cybill Shepherd looks: