Celebrity Behind the Scenes: Justin Does Vegas By People Staff Published on October 22, 2008 11:45 AM Share Tweet Pin Email Trending Videos 01 of 04 HE'S WITH THE BAND Frank Micelotta/Getty No, he's not joining the Jonas Brothers! Justin Timberlake shares a backstage meet and greet with the teen group after they performed at his Oct. 17 benefit concert at Planet Hollywood in Las Vegas to raise money for Shriners' Hospitals for Children. How did Timberlake get the band to perform? "I actually wrote letters," he told PEOPLE. 02 of 04 SINGING HIS PRAISES Frank Micelotta/Getty Also backstage at the charity concert: the Black Eyed Peas' will.i.am. The singers were joined at the star-studded benefit by Adam Levine of Maroon 5, 50 Cent and Rihanna. 03 of 04 ROLL WITH IT Frank Micelotta/Getty Justin Timberlake shows off his perfect form. The pop star held a late night bowling event at Las Vegas' Red Rock Casino on Oct. 14 during a break from his ongoing work for Shriners' Hosptials for Children, which raised $1 million for sick children. 04 of 04 HOLD UP! Frank Micelotta/Getty It's an 'N Sync reunion! Timberlake is joined by Chris Kirkpatrick at his bowling party on Oct. 14.