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Kim Kardashian stole the show from Avril Lavigne!

Kardashian and NBA beau Kris Humphries accompanied Lavigne and Brody Jenner to the singer's "Goodbye Lullaby" promulgation band in NYC Tuesday night. The foursome sipped on Ciroc cocktails at SL Lounge to celebrate Lavigne's fourth flat album.

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"I was just perception to the CD with Avril in the car. It's so great. I love it," Kardashian said of her step-brother's new lady.

A attestator tells UsMagazine.com that the 30-year-old actuality star was "super affectionate" with Humphries, 25, every night. She was perched on the travel of her sport star beau, and the two weren't shy most packing on the PDA.

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Even though the couple has exclusive been together a some months, Kardashian confessed to Extra that she has babies on the mentality and hasn't found "one thing wrong" with her new man!

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Jenner dodged interviews, but he told reporters he was "proud" of Lavigne. The 26-year-old also gave a shout-out to her "boyfriend Brody" and thanked him for "putting up with her."

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