Kim Kardashian The Birthday Tour Continues

10/23/2011 6:00 AM PDT

One night after celebrating her 31st birthday in New York City, Kim Kardashian -- along with hubby Kris Humphries, sister Khloe, brother-in-law Lamar Odom, and BFF Mark Ballas -- brought the party to Marquee nightclub in Las Vegas.

It's hard to keep up with a Kardashian on her birthday.