Previously announced presenters include Kate Beckinsale, Jamie Foxx, Owen Wilson, Justin Timberlake, Matt Dillon, Will Ferrell, T.I., Kate Hudson, Ludacris, Rebecca Romijn, Kate Bosworth, Famke Janssen, John C. Reilly and Brandon Routh.
Live performers include Gnarls Barkley, Christina Aguilera and AFI.
Hollywood star Jessica Alba has been tapped as host of this year's ceremony.
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