The singer still run for one of the prizes with "Skyscraper"
Demi Lovato will be another artist to perform at the awards MTV Video Music Awards, which will be Green Day, Pink, Taylor Swift, among others.
The singer will sing the song "Give Your Heart A Break" in a presentation before the event, to be held on September 6.
"I can not wait to be part of all this action that starts an incredible night of music and fun," said Demi.
Demi Lovato still compete at the awards in the category of Best Video With A Message, with the video for "Skyscraper".