Singer/songwriters Chris Isaak and Brandi Carlisle, performing "Love Me Tender" on Tuesday in front of the Heart Bar inside Planet Hollywood Resort. The duo was recording the song as part of an ABC special on Elvis Presley scheduled to air in September.
KISS bassist Gene Simmons, dining Tuesday at Joe’s Seafood, Prime Steak and Stone Crab restaurant (Forum Shops at Caesars).
Music mogul Sean "Diddy" Combs, hosting the launch party for the spring 2008 line for his Sean John Underwear/Loungewear fashion line Monday at Light nightclub (Bellagio). Also at Light: NBA player Baron Davis (Golden State Warriors), singer Mario and music producer Russell Simmons.
At Jet nightclub Monday inside The Mirage: boxing champion Floyd Mayweather Jr., rapper Young Jeezy, comedian/actor Orlando Jones and music producer Dallas Austin. The Shop Boyz, one of the top rap groups in music, highlighted the night with a performance.
Socialite Paris Hilton, partying with friends Monday at Pure nightclub (Caesars Palace) and Light nightclub (Bellagio). Earlier in the evening, Hilton dined at Social House restaurant (Treasure Island).
Also at Pure nightclub: Actor Wilmer Valderrama, "Beacher’s Madhouse" frontman Jeff Beacher, Linkin Park frontman Chester Bennington, United States Olympic gold medalist Maurice Greene, mixed-martial artist Frank Trigg and Ami and Chris Nunez of TV show, "Miami Ink."
Rapper Young Jeezy, visiting OPM nightclub Monday inside The Forum Shops at Caesars.
MTV reality star Lauren "LC" Conrad and DJ AM, dining separately Monday at Fix restaurant (Bellagio).
KISS guitarist Gene Simmons, dining Monday at Stack restaurant (The Mirage) before walking over to Jet nightclub.
Actress Brittany Daniel, dining Monday at Social House restaurant (Treasure Island). Also stopping by Social House: music producer Jermaine Dupree and rocker Travis Barker …
NFL Hall of Famer Michael Irvin (Dallas Cowboys), partying Monday with friends at Tabu Ultra Lounge (MGM Grand).
Boxing legend Sugar Ray Leonard, catching Monday’s performance of "Stomp Out Loud" with his family at Planet Hollywood Restort.