Chris O'Donnell was 18 in Men Don't Leave when he played the character 'Chris Macauley'.
That was over 34 years ago in 1990.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 53, and has starred in 25 movies in total, 24 of those since Men Don't Leave was released.
In Men Don't Leave, I think Chris O'Donnell looks: