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Teen Choice Awards 2012: Demi Lovato Tapped as Host

Demi Lovato X Factor Season 2 Auditions - P 2012
John Medina/Getty Images
Demi Lovato

The "X Factor" judge will lead this year's awards ceremony; Cat Deeley added to list of participants.

The X Factor judge Demi Lovato has been set to host Fox's Teen Choice Awards, airing live on Sunday, July 22.

So You Think You Can Dance and The Choice host Cat Deeley is also scheduled to appear on the telecast, joining previously announced Troian Bellisario, Ashley Benson, Miley Cyrus, Zooey Deschanel, Ellen DeGeneres, Jason Derulo, Zac Efron, Selena Gomez, Lucy Hale, Josh Hutcherson, Victoria Justice, Laura and Vanessa Marano, Bridgit Mendler, Lea Michele, Shay Mitchell, Tyler Posey, Gordon Ramsay, Dax Shepard, Sophia Grace and Rosie, Jordin Sparks and Taylor Swift.

Justin Bieber, Carly Rae Jepsen, Flo Rida, No Doubt and DJ Pauly D will perform.

PHOTOS: 'X Factor' Finale: The High and Low Notes

Lovato was officially named one of the judges for the second season of The X Factor alongside Simon Cowell, L.A. Reid and Britney Spears on May 14 during Fox's upfront presentation to ad buyers in New York City. Lovato and Spears fill the vacated spots left by Paula Abdul and Nicole Scherzinger.

Lovato, whose first single "Skyscraper" off her latest album Unbroken recently went platinum, received the Acuvue Inspire Award at last year's Teen Choice ceremony.

Voting for the Teen Choice Awards ends Saturday, July 21.

Bob Bain and Michael Burg executive produce with Paul Flattery and Kelly Brock producing. Greg Sills is supervising producer.