Just a week after a judge threatened to take Britney Spears’ kids away, the singer went out with friends to Sùtra Lounge in Costa Mesa, Calif. While enjoying a girls’ night out on Sept. 27, Brit chatted with Life & Style. Despite the pain of the custody battle, she revealed, “I’m just trying to have some fun.” Still she wasn’t entirely carefree. “I miss my babies when they’re gone,” Britney told Life & Style. On Oct. 1, a judge ordered Brit to hand over her kids, Sean Preston, 2, and Jayden James, 1, to their dad (and her ex) Kevin Federline. “We’re all worried about her. She’s extremely vulnerable,” says a Britney insider, who adds, “It’s going to make her so mad, she’ll start a full-out attack on Kevin.” Read the new Life & Style, on newsstands now, for more!