Only one hour into her birthday, starlet Lindsay Lohan was not exactly celebrating when she tweeted that a waitress punched her “for no reason.” Jasmine Waltz, a 27-year-old server at Los Angeles nightclub Voyeur, reportedly punched the troubled actress early on Friday morning as she rung in her 24th year. "The waitress has a history with Doug Reinhardt [Paris Hilton’s ex], and Lohan was hanging out with him,” an eyewitness told Us Weekly. “She was jealous, and out of nowhere, the waitress punched her in the face! Doug didn't want any part of it and went to the other side of the booth. Lohan ran out." Unfortunately, that wasn’t the end of the alleged altercation—another witness says Lohan ran into Waltz again at the nearby Rockstar House. But, a source told E! Online that the altercation was actually due to Lohan allegedly getting close to Reinhardt’s friend and Waltz’s rumored ex, Danny Cipriani. Whatever the cause of the brawl, rumor has it Waltz could lose her job at Voyeur. A rep for the club would not comment.