lindsay lohan and sam ronsonLindsay Lohan and Samantha Ronson reportedly rung in the New Year with a public fight.

The women spent New Year in Miami, where Lindsay showed off her new bikini on the beach while Sam prepared for her DJing gig at Mansion.

A source told the New York Post that the women had been arguing in another Miami club, Set, on Tuesday night but they knocked it up a notch for the last night of 2008.

The source explained that the women started arguing as Sam’s set finished and the row spilled out into an alley behind the club: “It was a really gross alley. There was a bum eating a sandwich watching the whole thing.

“Lindsay was really unstable and flipping out, [screaming] ‘When I storm off, you are supposed to follow me!’

“They were punching each other - it was bad. And they were doing this in front of all of us. It was scary.”

The source added that at one point, Lindsay dropped to her knees: “[She said] ‘Why are you doing this to me?’ And Sam just said, ‘I don’t know you.’”

The arguments continued back at their hotel with fellow guests complaining of crashing sounds and shouts coming from their room until well into New Year’s Day, with hotel security called to eventually take photographs of the room for evidence: “Mirrors were broken and it was a complete mess.”

A spokesperson for Lindsay told the newspaper: “There was an argument - I don’t know the details - but they left for LA together and it’s fine.”