How old was Hilary Duff in 'Lizzie McGuire? Inside the Disney star's rise to fame and life after child stardom

Hilary Duff is an actress who starred as Lizzie McGuire in the popular Disney TV show with the same name. One of her biggest songs "What Dreams Are Made Of" came from "The Lizzie McGuire Movie."

Hilary Duff rose to fame at the young age of 13 when she was cast as the star of the Disney show, "Lizzie McGuire." (L. Cohen/WireImage) While Duff only played the character for two seasons, the show was a big success and eventually led to the release of "The Lizzie McGuire Movie" in 2003. From left to right: Clayton Snyder, Yani Gellman, Hilary Duff, Jake Thomas, Adam Lamberg, and Ashlie Brillaut. (L. Cohen/WireImage) One of Duff's most popular songs, "What Dreams Are Made Of" was performed by her and co-star Yani Gellman's characters in "The Lizzie McGuire Movie." (L. Cohen/WireImage) Duff went on to have a somewhat successful music career of her own, releasing songs including "Come Clean," "Fly," and "Metamorphosis." (L. Cohen/WireImage) Ashlyn Messier is a writer for Fox News Digital. 

"I was too young to do a character dive on Lizzie. I think I was just playing myself. And I really related to that girl. She was me, and I was her, and that was that," she told Bustle this year about playing the role at such a young age.