PHOTO: Audrina Patridge and Christina Milian Holding Booty Shorts

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Reality TV star Audrina Patridge teamed up with Bongo to celebrate the launch of her new show, which is creatively entitled Audrina and will premiere on VH1 Sunday night at 9 p.m. ET. Also in attendance were Christina Milian, Rob Kardashian, Tristan Wilds, and JoJo.

Check out Milian and Patridge in the photo, above. What are they holding? Are those the girl version of jeans-underwear? Just kidding.

Here's a photo of Patridge with the male Kardashian, Rob. We didn't recognize him at first because he's dressed up as Brad Goreski.

· Audrina [VH1]
· Bongo [Official Site]