That was over 9 years ago in 2013.
Today she is 32, and has starred in 31 movies in total, 14 since Gangster Squad was released.
In Gangster Squad, I think Emma Stone looks:
Gangster Squad scores 6.2 out of 10 on The Movie Database.
Emma Stone's first acting role was as 'Natalie' in The House Bunny, released in 2008 when she was 19.