Jessie J perfomed 'Bang Bang' with Ariana and Nicki at the AMAs... and it was AMAZING
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Countdown To The Capital Jingle Bell Ball With Morrisons

20. Jessie J perfomed 'Bang Bang' with Ariana and Nicki at the AMAs... and it was AMAZING
Dressed in matching gold outfits, could this performance have been any more SASSY?!