Jersey Shore's Mike "The Situation" Sorrentino hosts at Jet Nightclub at The Mirage on January 22, 2010 in Las Vegas, Nevada.  Along with DJ Pauly D!

Tyson Ritter of the All American Rejects and Avril Lavigne put on an amazing performance on Sunday at The Bank Nightclub in the Bellagio hotel Las Vegas. They performed a handful of songs together including Dirty Little Secret.

Paris Hilton promoting her new web site parishilton.com at the new nightclub Vanity at the Hard Rock Hotel Las Vegas.

Mya performed at Jet nightclub in the Mirage Hotel Las Vegas on Friday night

The new club Vanity located in the new luxury tower of the Hardrock Hotel Las Vegas. Vanity had Shwayze, Cisco Adler , LMFAO, all grooving to the sounds of  DLUX behind the DJ booth. Paris Hilton and boyfriend, Doug Reinhardt, were also in the house.

JET HOSTED THE SUPER STAR RAPPER SoulJa Boy.. when asked Soulja Boy identifies his goal as making upbeat, party-themed music that avoids the negative, violent image that he sees in most hip-hop.

The red hot Haze nightclub in the City Center was the spot for John Legend to perform and celebrate his birthday on Saturday night.

Kristin Cavallari celebrates her 23rd birthday Saturday night at the new nightclub Eve in the  City Center. Daren Kagasoff and Greg Finley make an appearance as well as Avatar\'s Laz Alonzo.

RayVanesse, Ron Jeremy and Velvet Skye arrives at the 2010 AVN Awards at the Pearl at The Palms Casino Resort on January 9, 2010 in Las Vegas, Nevada.