Dev Patel was 17 in Slumdog Millionaire when he played the character 'Older Jamal'.
That was over 15 years ago in 2008.
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 20 movies in total, 14 of those since Slumdog Millionaire was released.
In Slumdog Millionaire, I think Dev Patel looks: