Paris Hilton, Tony Hawk, Ashlee Simpson, Dave Chappelle, Jon Stewart, Lenny Kravitz, P. Diddy, Ludacris and LL Cool J will all appear at the MTV Video Music Awards this year. Most of those will present awards, but Chappelle will perform, according to the network. Will he perform as Rick James, Lil Jon, or himself? Tune in to find out. Speaking of Lil Jon, he leads the list of new performers, which also includes Petey Pablo, the Ying Yang Twins and Terror Squad featuring Fat Joe. They join Usher, Kanye West, Jessica Simpson, Hoobastank, Yellowcard and Jet as previously announced performers. The awards will be handed out August 29 in Miami.