Super CR3W performs at the Hennessy Black event at Pure Nightclub on March 30, 2010 in Las Vegas, Nevada.

Jay Z at TAO Nightclub at the Venetian on March 27, 2010 in Las Vegas, Nevada.

Lance Bass and Ryan Rottman celebrate Ryan Rottman's birthday at Haze Nightclub on March 20, 2010 in Las Vegas, Nevada.

Gavin Rossdale attends Jet Nightclub at Bellagio Las Vegas on March 14, 2010 in Las Vegas, Nevada.

Katie Cassidy poses at The Bank Nightclub at Bellagio Las Vegas on March 12, 2010 in Las Vegas, Nevada.

Soulja Boy performs at Eve nightclub at CityCenter on March 12, 2010 in Las Vegas, Nevada.

Robert Kardashian celebrates his birthday at The Mirage Hotel and Casino on March 12, 2010 in Las Vegas, Nevada.

Alice Eve arrives at "She's Out Of My League" movie premiere at Planet Hollywood Resort and Casino on March 10, 2010 in Las Vegas, Nevada. "She's Out Of My League" Movie Premiere At Planet Hollywood Resort And Casino

Krysten Ritter arrives at "She's Out Of My League" movie premiere at Planet Hollywood Resort and Casino on March 10, 2010 in Las Vegas, Nevada. "She's Out Of My League" Movie Premiere At Planet Hollywood Resort And Casino

Kim Kardashian celebrates her fragrance launch at Tao Las Vegas at the Venetian Hotel and Casino Resort on February 27, 2010 in Las Vegas, Nevada.