Surprise: Madonna and Taylor Swift Completely Kill It on Stage

Madonna and Taylor Swift shocked everyone at the iHeartRadio Music Awards in LA on Sunday, delivering an awesome performance for the ages. As Madonna sang her new single "Ghosttown," Taylor provided accompaniment on her guitar. The ladies smiled at each other while sharing the spotlight, and at one point, they leaned in for an adorable hug and kiss. This isn't the first time the stars have linked up; the duo first grabbed headlines when they met at the Grammy Awards in February. Keep reading to see fun snaps of their performance, and then check out Taylor's cute moments with Justin Timberlake from earlier in the show.