First it was Keith Urban. Next it was Carrie Underwood. Now Taylor Swift has taken her turn as the latest country superstar to join the Rolling Stones onstage. Last night she guested with Mick and the boys in Chicago and performed the classic Stones hit "As Tears Go By". Check out the video!

Mick and Keith. Mick and Carrie. Mick and Taylor. What next, Mick and Merle?