That was over 17 years ago in 2004.
Today she is 49, and has starred in 55 movies in total, 46 since Mean Girls was released.
In Mean Girls, I think Amy Poehler looks:
Mean Girls scores 7 out of 10 on The Movie Database.
Amy Poehler's first acting role was as 'Mary Hatch (voice)' in Escape from It's a Wonderful Life, released in 1996 when she was 25.