Ansel Elgort was 18 in Carrie when he played the character 'Tommy Ross'.
That was over 10 years ago in 2013.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 29, and has starred in 19 movies in total, 16 of those since Carrie was released.
In Carrie, I think Ansel Elgort looks: