10. Sean "Diddy" Combs
Diddy should call Vegas his second home. Here, he parties with Olympic champ Michael Phelps at Tao Nightclub.
9. Snooki
Leave it to the the Jersey Shore star to party with an inflatable croc at LAX Nightclub. To her credit, after baby Lorenzo was born, we've seen a lot less of the reality star in the clubs.
8. Scott Disick
Kourtney Kardashian's beau, aka Lord Disick, is no stranger to having a good time. Recently, the Kourtney & Kim Take Miami star celebrated Halloween in Sin City.
7. Eva Longoria
The Desperate Housewives star isn't just a leisurely LV visitor—she owns a restaurant here, too!
6. Redfoo
Clearly, the former LMFAO member can party rock. He is now a monthly fixture at Marquee in the Cosmopolitan.
5. Kendra Wilkinson
The blond bombshell makes frequent trips to Vegas, but this time she left her hubby and baby at home for some fun by the pool (and to show off that amazing bikini bod). You go girl!
4. Kim Kardashian
Vegas fab. The Keeping Up With the Kardashians star knows how to let her hair down. Days after we learned she was expecting, Kim still made time to ring in 2013 with Kanye West at 1OAK Nightclub.
3. The Dancing With the Stars Cast
It seems like there's always one (or two) of the show's pro-hoofers somwhere in Vegas at any given time. Here, Karina Smirnoff admires Derek Hough's smokin' hot bod at Marquee inside The Cosmopolitan.
2. Paris Hilton
The hotel heiress is a fixture in Las Vegas. She most recently won $30,000 playing jackpot at the Wynn during a birthday celebration.
1. Prince Harry
The royal party boy isn't a regular in Vegas, but he earned a spot on our list of all-stars when he was caught playing a late-night game of naked billiards. A true royal scandal!