That was over 20 years ago in 2001.
Today she is 36, and has starred in 57 movies in total, 46 since Donnie Darko was released.
In Donnie Darko, I think Jena Malone looks:
Donnie Darko scores 7.8 out of 10 on The Movie Database.
Jena Malone's first acting role was as 'Willa Januson' in Hidden in America, released in 1996 when she was 12.