the Teenage Witch Herself Cameo; performed "Sk8er Boi" 2004 Going the Distance Herself Cameo; performed "Losing Grip" 2006 Fast Food Nation Alice High school activist Over the Hedge Heather Voice only 2007 The Flock Beatrice Bell Suspect's girlfriend 2010 American Idol Herself Guest judge (L.A. auditions) Discography Main article: Avril Lavigne discography Let