Rob Lowe was 15 in Schoolboy Father when he played the character 'Charles Elderberry'.
That was over 44 years ago in 1980.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 60, and has starred in 85 movies in total, 84 of those since Schoolboy Father was released.
In Schoolboy Father, I think Rob Lowe looks: