LAS VEGAS: Katy Perry performed with The Rolling Stones at a gig in Las Vegas on Saturday night. The 'Teenage Dream' singer duetted with Mick Jagger on the track 'Beast of Burden' during their show at the MGM Grand Garden Arena. Perry is the latest star to join the Stones on stage as part of their current '50 and Counting' tour. Lady GaGa, Gwen Stefani, Florence Welch, John Mayer, The Black Keys, Tom Waits and Eric Clapton are among the artists to have performed on the tour so far at various venues.–DS