Alicia Keys celebrated her twenty-seventh birthday on Wednesday night at NYC’s posh Bed Nightclub-and a fight broke out just moments after A.K enjoyed a round of “Happy Birthday.”

Baby Phat founder Kimora Lee Simmons screamed, “Get out of my face, bitch!,” according to a party snitch.

The estranged wife of hip-hop mogul Russell Simmons was shouting at a woman in jeans and a tan vest. “Kimora said that the woman had thrown a drink at her,” says a witness. “She didn’t look wet to me. But security grabbed the girl and ushered her out.”

“She’s jealous of me,” K.S exclaimed when asked what the hell the fight was about.

Camp Kimora claims that the ousted partygoer was “a disrespectful fan” who “accosted” Kimmy. A New York Daily News source added, “Kimora doesn’t even know this person, but she constantly shows up at events where Kimora is expected. Frankly, it’s a little scary. Kimora is looking into getting a restraining order.”

Whatever the story, it doesn’t look like A. Keys is buying: “When Kimora was leaving, Alicia totally ignored her,” says one snitch. Alicia’s people claim that the singer “had a wonderful time.”