Justin Long was 32 in Alvin and the Chipmunks: Chipwrecked when he played the character 'Alvin (voice)'.
That was over 12 years ago in 2011.
Today he is 45, and has starred in 76 movies in total, 30 of those since Alvin and the Chipmunks: Chipwrecked was released.
In Alvin and the Chipmunks: Chipwrecked, I think Justin Long looks: