It was just announced that Demi Lovato will be joining the Pre-Show celebration for the 2012 VMAs.

The 2012 MTV Video Music Awards is set to air on September 6th. To get the party started, Demi will be performing her hit 'Give Your Heart a Break' before the main show begins. Her performance will take place at 8 P.M. est.

Lovato is just the beginning of a huge show that will feature the likes of One Direction (their VMA debut), Pink, Green Day, Taylor Swift and more. The show will kick off at 9 P.M.