Levi Miller was 7 in A Heartbeat Away when he played the character 'Boy Fishing'.
That was over 13 years ago in 2011.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 21, and has starred in 13 movies in total, 11 of those since A Heartbeat Away was released.
In A Heartbeat Away, I think Levi Miller looks: