Demi Lovato will be giving her heart a break on MTV next month…

The 20-year-old part-Mexican American singer, who is preparing for her big debut on Fox‘s The X Factor, has signed on to perform her hit “Give Your Heart a Break” at the 2012 MTV Video Music Awards Pre-Show on Thursday, September 6.

“I’m so excited to perform at the VMA preshow. I can’t believe it!” said Lovato via her Twitter account.

The live broadcast of the pre-show to the 2012 MTV Video Music Awards is slated to start at 7:00 pm ET. The show will feature deejay Calvin Harris, who will entertain the crowd throughout the night.

Meanwhile, a red-carpet event will take place outside Los Angeles’ Staples Center. It’ll be covered for MTV Style by Teen Wolf star Holland Roden.

MTV News‘ Sway Calloway, Jim Cantiello, James Montgomery and Christina Garibaldi will also cover the red carpet, as well as the activities behind the scenes and backstage.

MTV Video Music Awards will begin at 8:00 pm for two hours with comedian Kevin Hart as host. Rihanna, Frank Ocean, Taylor Swift, Pink and One Direction are set to perform.