High Quality Content by WIKIPEDIA articles! "So Yesterday" is a song recorded by American pop singer Hilary Duff. The song was written by Lauren Christy, Scott Spock, Graham Edwards, and Charlie Midnight, and produced by The Matrix for Duff`s second studio album, Metamorphosis (2003). The song draws influences from pop rock music, and the lyrics chronicle the protagonist getting over a breakup with her boyfriend, declaring him as "so yesterday". The song received mixed reviews from music critics, with some of them noting its close similarity to Avril Lavigne`s works, while others named it one of Duff`s best songs ever.