Lizzie Mcguire The Movie Soundtrack
It is composed primarily of songs from (or inspired by) the film, including Hilary Duff 's " Why Not " and her sister Haylie 's "Girl in the Band". "Why Not" was released as a single outside the United States on June 23, 2003 and later included on Hilary Duff's second album, Metamorphosis (with different lyrics in the first verse). Duff referred to "Why Not" as "a song that I really love. It's really fun, and about just letting loose, so it's really cool".