Ethan Cutkosky was 7 in Fred Claus when he played the character 'Carl (uncredited)'.
That was over 17 years ago in 2007.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 24, and has starred in 5 movies in total, 3 of those since Fred Claus was released.
In Fred Claus, I think Ethan Cutkosky looks: