In TheaterMania's newest video supercut, a host of sassy Velma Kellys (including Bebe Neuwirth, Liza Minnelli, Chita Rivera, Catherine Zeta-Jones, Ute Lemper, Caroline O'Connor, Kate Hudson, and Lea Michele) take to the stage and rehearsal studio to sing about their jazzy lives. Check out the video to see the Chicago starlets thrust, swivel, and shrug their way through "All That Jazz."