Cast member Hayden Panettiere (L) answers a question, as co-star Marcia Gay Harden watches, at the Lifetime Television panel for the movie "The Amanda Knox Story" during the Television Critics Association winter press tour in Pasadena, California January 7, 2011.
 Cast member Emilia Clarke attends the HBO panel for the television series "Game of Thrones" during the Television Critics Association winter press tour in Pasadena, California January 7, 2011.
 Host Heidi Klum attends the Lifetime Television panel for the show "Seriously Funny Kids
 Host Heidi Klum gestures as she listens to a question at the Lifetime Television panel for the show "Seriously Funny Kids"
 Cast member Evan Rachel Wood answers a question at the HBO panel for the television series "Mildred Pierce

Katy Perry, Miley Cyrus, Rihanna & other artists belted out their hits at the 2010 American Music Awards held at Nokia Theatre L.A. Live on Nov. 21, 2010 n Sunday in Los Angeles.

Miley Cyrus
Rihanna
Christina Aguilera
Taylor Swift
Katy Perry
Justin Bieber
Fergie
Willow Smith
Ke$ha
Nicki Minaj
Enrique Iglesias
Avril Lavigne
Heidi Klum
Mandy Moore
Kelly Osbourne
Rihanna
Jessica Alba
The Backstreet Boys and the New Kids on the Block
Jada Pinkett Smith
Pink
Miley Cyrus
Usher
Jenny McCarthy
Christina Milian
Sheryl Crow
Katy Perry
Diddy
Charles Kelley, Hillary Scott and Dave Haywood
John Legend
Natasha Bedingfield
The Black Eyed
The Situation
Singer Keri Hilson
Modern Family" star Rico Rodriguez
Karina Smirnoff
Singer Mike Posner
Ne-Yo
Whitney Port
Gavin Rossdale
Cheryl Burke
Lance Bass
Patrick Monahan