U.S. actress and singer Demi Lovato is to serve as host of the Teen Choice Awards show, Fox announced Monday. The show -- honoring fan favorites in film, television and music -- is to take place July 22. The former star of TV's "Sonny with a Chance" is now a judge on the singing competition show "The X Factor." She also is touring North America this season, performing dozens of concerts. Justin Bieber, Carly Rae Jepsen, Flo Rida and No Doubt have been booked to perform, EW.com said. Read more: http://www.upi.com/Entertainment_News/TV/2012/07/09/Lovato-to-host-Teen-Choice-Awards/UPI-21031341885648/#ixzz20Bu19CZ4