That was over 10 years ago in 2011.
Today she is 34, and has starred in 21 movies in total, 12 since Green Lantern was released.
In Green Lantern, I think Blake Lively looks:
Green Lantern scores 5.1 out of 10 on The Movie Database.
Blake Lively's first acting role was as 'Bridget Vreeland' in The Sisterhood of the Traveling Pants, released in 2005 when she was 17.