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:
The British brunette beauty certainly bang banged into the room in her tight, gold body suit, while Ariana and Nicki Minaj provided the track even more energy.
While Ariana did her thing on stage, Jessie worked the crowd, getting down with Taylor and Khloe, the latter of which gave her bottom a smack in mid-performance.
Ariana's brother and Big Brother star Frankie Grande also caught the cameras' attention, bopping along to the catchy tune as he supported his little sis and cohorts.
Jessie J's peformance was but one of many memorable efforts at the 2014 American Music Awards, a star studded bonanza that also featured the likes of ...