Thursday night was probably the first time that the Kills' Alison Mosshart and Jamie Hince got to play two concerts in one evening in the same venue. Six songs into the show, a fire detected on the roof of Webster Hall put a stop to the music for nearly 45 minutes until two fire engines pulled up and checked things out. "That was that fireman's 15 minutes of fame," Agyness Deyn said of the yellow suit-clad FDNY'er who crawled through the ceiling of the legendary concert hall and, after asking everyone to stay calm, couldn't resist yelling "rock and roll!" into the stage microphone. Turns out it was something minor—or so we hope. At any rate, the inhabitants of the VIP section—Deyn, Kate Moss, Mary-Kate Olsen, Jefferson Hack, Alexandra and Theodora Richards, Lou Doillon, and Lily Cole—were soon rocking out again. (Not a bad cheering section, eh?) "They're so good together," Olsen said during the concert, adding that Mosshart's dance moves—a combination of writhing, headbangs, and twirls—were similar to her at-home, one-woman dance-offs. "It's like they're in their own little worlds and totally in their element onstage." Indeed, when the VIPs and the band's friends and family gathered backstage post-show, the equally sweaty Hince and Mosshart were morphing back into their sensitive, demure off-stage personae. "I'm sorry I'm so out of it," Mosshart said. "I'm recuperating." Well, when they ran out of liquid medicine at Webster Hall, the action was moved to the Bowery Electric, where more meds were served.