Alex Pettyfer was 13 in Tom Brown's Schooldays when he played the character 'Tom Brown'.
That was over 19 years ago in 2005.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 34, and has starred in 24 movies in total, 18 of those since Tom Brown's Schooldays was released.
In Tom Brown's Schooldays, I think Alex Pettyfer looks: