That was over 19 years ago in 2003.
Today she is 34, and has starred in 27 movies in total, 20 since Agent Cody Banks was released.
In Agent Cody Banks, I think Hilary Duff looks:
Agent Cody Banks scores 5.1 out of 10 on The Movie Database.
Hilary Duff's first acting role was as 'Wendy' in Casper Meets Wendy, released in 1998 when she was 10.