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.
The Birthday Tour Continues
10/23/2011 6:00 AM PDT BY TMZ STAFF
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