There's no place for friendship on the red carpet.
Demi Lovato and Selena Gomez may be BFFs, but you'd never know it from the face-off below.
Each young star attended the 2009 American Music Awards. Following the event, most of the talk surrounded Adam Lambert's controversial performance, but some of it was centered on the competition between these singers.
Study their fashion choices below and vote in the proceeding poll...
Who looked better on the red carpet?