That was over 12 years ago in 2010.
Today she is 38, and has starred in 32 movies in total, 19 since Greenberg was released.
In Greenberg, I think Greta Gerwig looks:
Greenberg scores 5.9 out of 10 on The Movie Database.
Greta Gerwig's first acting role was as 'Greta' in LOL, released in 2006 when she was 22.