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For Lindsay Lohan and joined-at-the-hip pal Samantha Ronson, three's not only a crowd—it's an arrest.

A particularly zealous fangirl was arrested at Chicago's Crimson Lounge Thursday night after jumping into Ronson's DJ booth, not only wreaking havoc on the professional spinner's set but refusing to leave the area.

Chi-town police Sgt. Antoinette Ursitti confirmed to E! News that 22-year-old Lindsay Burns was charged with simple battery after reportedly punching, kicking and generally resisting removal from the booth by the club's security guards.

Apparently there's only enough room for one Lindsay in Ronson's life—or at least booth.

"She was only 100 pounds, but she managed to take two of my own security guys down," Crimson's general manager Matthew McCahill told E! News. "I just looked over, and I saw that two of my guys were down. I know she kneed one of them, but I don't know how she got the other one down."

As it is, no star was harmed in the making of the scene.

Lohan, who an eyewitness said had spent several hours hanging out beside her bosom buddy's DJ booth, had already retired to her and Ronson's shared suite at Hotel Sax, where the club is located. It was just after the star departed that Burns made her move, resulting in four security guards scurrying to remove her from the premises.

A clubgoer told E! News that three cop cars eventually turned up to the club and took Burns, who was slapped with a misdemeanor for her refusal to cooperate, away in handcuffs.

It's unclear whether Burns has since been released from custody.

Ever the pro, Ronson finished out her set without further incident and headed back to her room.

The dynamic duo of Lohan and Ronson is expected to hit Sin City soon; Ronson is booked to spin at the Las Vegas Planet Hollywood tonight and tomorrow.

—Reporting by Claudia Rosenbaum and Liz Crokin