Alison Mosshart and Jamie Hince, the London-based duo behind the band the Kills, blew into town this week for a performance on the Conan O'Brien show, which aired Tuesday night, and a gig tomorrow night at Webster Hall. The Conan show ended up being a family affair for the Floridian Mosshart. Her mother Vivian, her aunt Nancy, and her brother Matthew showed up for the taping. "It was definitely a moment," Mosshart said later at the Spotted Pig in the West Village, where friends and family met up after their performance. "My brother and I used to always share hotel rooms when we were on family vacations. We'd stay up watching shows like Conan O'Brien. That's what I was thinking of when I was up there." Mother Mosshart nearly missed the late-night gig, standing behind a giant, vision-obscuring boom mike. "Thankfully, it swooped down during the performance so we could see her. She was fantastic," she said. Ah, maternal pride. Thursday night's performance (which will no doubt have some glam attendants—Hince is Kate Moss' better half) at Webster Hall is already sold out, so if you don't have tickets you'll have to wait for Conan reruns to get your fix. Or hit the road with the band—their tour, which promotes the new album "Midnight Bloom," started Wednesday in Boston. Go to their MySpace page for dates and places.