{blackbabes} Late-night pals

Rita Ora and Samantha Ronson had a raucous girls' night out after meeting at the Raven Thursday night. The British singer's label Roc Nation held a meet-and-greet with editors at the venue before Ronson and her sister Charlotte hosted a party for the relaunch of the Web site Fashion and Style, where Samantha got on the DJ decks. Ora appeared at her event and stayed to hang with the Ronsons at their party. Later, the singer, wearing a pair of "killer" Chanel booties, and Samantha were spotted at East Village karaoke bar Sing Sing with 10 friends. Spies said the group arrived at about 3:30 a.m., and were spotted taking shots and rocking out until sunrise.