Kim Kardashian All Over Kris Humphries, Justin Bieber

Kim Kardashian went boy crazy in New York City last night.

First, she hung out with Justin Bieber at Z100's Jingle Ball, taking in the singer's impressive set and posing flirtatiously with him backstage. Try not to hurl anything at your computer screens when viewing this photo, Bieberites...

Then, Kim met up with New Jersey Nets basketball player and rumored new lover Kris Humphries. The pair parties Provocateur Lounge until 1:45 a.m.

At ...

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