Nick Jonas was 14 in Hannah Montana & Miley Cyrus: Best of Both Worlds Concert when he played the character 'Self'.
That was over 16 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 31, and has starred in 29 movies in total, 27 of those since Hannah Montana & Miley Cyrus: Best of Both Worlds Concert was released.
In Hannah Montana & Miley Cyrus: Best of Both Worlds Concert, I think Nick Jonas looks: