Music
Rex Features
Miley Cyrus, Olympic swimmer Michael Phelps and singer Ciara will also present awards, the network confirmed.
High School Musical stars Zac Efron, Vanessa Hudgens, Ashley Tisdale and Corbin Bleu will also do the honours, alongside Kristen Stewart, Robert Pattinson and Taylor Lautner from upcoming movie Twilight.
The Ting Tings, Katy Perry, T-Pain and Lupe Fiasco will perform hits from the last 25 years to mark the event's quarter century.
Pink, Rihanna, Paramore, TI, the Jonas Brothers, Lil Wayne and Kid Rock were previously confirmed for the lineup.
The ceremony, to be hosted by Russell Brand, will be held in Los Angeles on September 7.
Britney Spears's manager recently denied rumours that the singer will perform at the awards.
Singles Reviews
DJ Fresh ft. Rita Ora: 'Hot Right Now' reviewThe DJ's latest effort lacks the magic of its predecessor.
The Sound
Playlist: 10 tracks you need to hearIncluding Katy Perry, Will Young and Nicki Minaj.
Music Interviews
Cher Lloyd: 'LA Reid loves scrambled eggs'Digital Spy finds out what the singer has been up to in America.
Album Reviews
The Ting Tings: 'Sounds From Nowheresville' reviewThe duo overcomplicate matters on their second studio album.
