Sean Kingston, his bodyguard and a band member raped teenager Carissa Copeloto in 2010, she claims - and the singer denies - in a new lawsuit.
Capeloto, 22, claims she was forced to have sex with Sean, his bodyguard and a member of Sean's band at a Seattle hotel three summers ago.
She says she had smoked pot and downed 7-10 shots of vodka at the time.
Capeloto, who is suing all three men, alleges she'd been invited to Kingston's hotel room following a Justin Bieber concert where Kingston had also performed.
When she showed up for a "meet-and-greet," he was waiting ... naked.
She says the bodyguard picked her up and "placed her on top" of Sean.
At that point, all three of the men proceeded to gang rape the girl while she was "obviously intoxicated, incapable of consent," the lawsuit alleges.
Capeloto says her friend eventually entered the room and rescued her, the cops were called, and she was taken to the hospital to receive treatment.
For injuries consistent with rape, she notes.
She says her life has been ruined by the trauma she has endured as a result of the alleged gang rape and she wants $5 million minimum in damages.
Kingston has filed legal documents insisting the sex was 100 percent consensual, and criminal charges against the singer were dropped in 2010.
Police concluded Capeloto wasn't credible enough to make a legitimate case against him then, a point he will surely bring up in fighting this lawsuit.
If this is true, the 23-year-old musician has much bigger problems than his alleged drinking, driving and texting habit. His trial is set for November.