August 28, 2012 16:47:04 GMT
The 'The X Factor (US)' judge will warm up the crowd as hottest music stars arrive at Staples Center in Los Angeles for the main show.
Before things get going at 2012 MTV Video Music Awards on Thursday, September 6, there will be a warm-up session kicked off by Demi Lovato. The 20-year-old singer has been tapped to perform her hit "Give Your Heart a Break" at 2012 MTV Video Music Awards Pre-Show.
"I'm so excited to perform at the VMA preshow. I can't believe it!" said Lovato. The live broadcast of the pre-show will start at 7 P.M. ET/PT, featuring as well DJ Calvin Harris who will entertain the crowd through the night.
Meanwhile, red-carpet event outside the Staples Center in Los Angeles, CA will be covered for MTV Style by "Teen Wolf" star Holland Roden. "It's been a blast to do these previous events just as part of the red carpet as a guest, and now that Iím hosting for the Red Carpet Report, I have no words. Just a lot of looks!" Holland said. MTV News' Sway Calloway, Jim Cantiello, James Montgomery and Christina Garibaldi will also take viewers live to the red carpet, behind the scenes and backstage.
The actual show will begin at 8 P.M. ET/PT for two hours with comedian Kevin Hart as host. Rihanna, Frank Ocean, Taylor Swift, Green Day, Pink, Alicia Keys and One Direction have been announced as performers.