Katy Perrybecame the fifth member of The Rolling Stones last night, taking to the stage with the rockers in Las Vegas (May 11).
K-Pez sung with frontman Mick Jagger on tune John Mayer to sing with The Rolling Stones as part of their 50 & Counting Tour.

[uuid=34703a1f-30b7-4723-b7a6-70d529215038]CHECK OUT 101 OF KATY PERRY'S FAMOUS LOOKS HERE![/uuid]

[uuid=4aa04a89-c17c-4be5-85b9-82ea94c81a55]SEE SEXY PICS OF KATY PERRY HERE![/uuid]