DUI Reveler

Denise Truscello/WIREImage

Rooney Mara isn't the only Girl With a Dragon Tattoo.

This reality star actually had her fire-breathing body art before the Swedish bestseller was on it's way toward a major Hollywood adaptation.

She showed off her inked-up torso (and new boyfriend) while hosting a soiree in Vegas this weekend.

Think you know which party girl's got the dragon tattoo? Find out after the jump:

J Woww, Jenni Farley

Courtesy of Denise Truscello/WIREImage

It's JWoww, aka Jenni Farley!

The Jersey Shore starlet was hanging at Studio 54 inside the MGM Grand, where she actually refused to fist pump.

When asked why she wasn't doing the signature dance move from her MTV show, JWoww said, "Girls don't fist pump."

Hmm, so she's too classy to fist pump, but not fist fight? OK, then!

Jenni was also joined by her new gorilla guy, Roger Matthews, during the bash.

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