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MEOW! We're only three days into 2009, but Lindsay Lohan and Samantha Ronson have already had what could be the catfight of the year!

According to Page Six, on New Year's Eve, Lindsay and Samantha started screaming at each other while hosting a bash at Mansion nightclub in Miami. The not so happy couple stepped outside and had a shouting match in an alley behind the club, where Linds yelled at Sam, "When I storm off, you are supposed to follow me!"

A source for Page Six said, "It was a really gross alley. There was a bum eating a sandwich watching the whole thing. Lindsay was really unstable and flipping out." I know the part about Lindsay flipping out is what interests you guys, but I'm more interested in what the bum thought. If only he had a camera phone or a videocamera, he'd be bathing in 100 dollar bills right now! People would pay good money to see this drama!

Anyway, after giving the bum quite a show, Linds and her lady love went back to the hotel, and multiple sources heard "crashing sounds and screaming" coming from their room, and then the fight spilled out into the hallway around 11am. What the eff? For a couple who generally shies away from doing more than holding hands or smiling when they're out, this is a pretty public display of affection...er, aggression!

The source continues, "They were punching each other - it was bad. [They] were doing this in front of all of us. It was scary." At one point, Linds dropped to her knees and bawled to Samantha, "Why are you doing this to me?" Sam reportedly looked at her and said, "I don't know you." Hotel security was called, and photos were taken of the broken mirrors and damage in the girls' "trashed" hotel room.

And it's not over yet! A few hours later, Linds and Sam tried to board an American Airlines plane to Los Angeles, and Linds was reportedly "such a mess" before takeoff, flight attendants asked her if she'd like to disembark but she refused.

Don't believe it? A rep for Lindsay confirmed that "there was an argument," but added that she "[didn't] know the details," and the ladies left for LA that day and are currently doing "fine."

Is an end to Rohan imminent?! We'd be so sad!