Here we go again....

Tags: alcoholism, argument, drugs, fight, las vegas, lilo, lindsay lohan, paparazzi, photographers, prive, rehab, row, samantha ronson.

Samantha Ronson may have been booked to provide a show for club-goers at Prive Las Vegas last night, but girlfriend Lindsay Lohan decided to follow and create quite a spectacle!

LiLo ordered red roses for Sam's hotel room, turning up at 1am. Things soon turned sour though, with a source saying: "The two started to argue in the DJ booth and while she was in the booth, Lindsay ducked down, popped up a few seconds later, and began dancing wildly."

Sam walked out at 3am, reportedly throwing up on the floor on the way out according to eye-witnesses. Lindsay followed, walking to her car with a drink in hand. Handing the glass to a club security guard, she was then heard angrily shouting: "Did she f*cking leave me? I want my f*cking car keys now! Can I have my car? I can't believe that f*cking b*tch left me!"

A paparazzo photographer on the scene reports: "Lindsay definitely appeared to be messed up on something, that's for sure. I've covered Lindsay for years and this is almost the worst I've ever seen her. She's back to the place she was two years ago before she went to rehab."

Do you think Lindsay is sober in this video??? What was she drinking before she drove off??