That was over 8 years ago in 2013.
Today he is 27, and has starred in 15 movies in total, 11 since We're the Millers was released.
In We're the Millers, I think Will Poulter looks:
We're the Millers scores 6.8 out of 10 on The Movie Database.
Will Poulter's first acting role was as 'Lee Carter' in Son of Rambow, released in 2007 when he was 13.