Nick Jonas was 15 in Night at the Museum: Battle of the Smithsonian when he played the character 'Cherub #3 (voice)'.
That was over 15 years ago in 2009.
Today he is 31, and has starred in 29 movies in total, 24 of those since Night at the Museum: Battle of the Smithsonian was released.
In Night at the Museum: Battle of the Smithsonian, I think Nick Jonas looks: