Taylor Kitsch was 24 in John Tucker Must Die when he played the character 'Justin'.
That was over 18 years ago in 2006.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 43, and has starred in 22 movies in total, 18 of those since John Tucker Must Die was released.
In John Tucker Must Die, I think Taylor Kitsch looks: