Lea Thompson was 20 in Jaws 3-D when she played the character 'Kelly Ann Bukowski'.
That was over 41 years ago in 1983.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 62, and has starred in 85 movies in total, 84 of those since Jaws 3-D was released.
In Jaws 3-D, I think Lea Thompson looks: