Jessie J Performs "Bang Bang" at AMAs, Grinds with Taylor Swift & Khloe Kardashian Because Obviously
Jessie J performed her hit "Bang Bang" at the American Music Awards 2014, with Ariana Grande joining her on the track and several audience members dancing along.
And by dancing, we mean shaking booty in the case of Khloe Kardashian, and Taylor Swift ... doing whatever it is Taylor Swift does. Because obviously. Watch: