Melanie Griffith was 14 in The Harrad Experiment when she played the character 'Student'.
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 66, and has starred in 65 movies in total, 65 of those since The Harrad Experiment was released.
In The Harrad Experiment, I think Melanie Griffith looks: