Now that she's split up with rapper Big Sean, Ariana Grande's love life has been met with some serious speculation. Her alleged new fella from One Direction and her ex-boyfriend Nathan Sykes performed there too so can you imagine the awkwardness? She changes boyfriends faster than Britney Spears, but everyone moves on at their own pace. Putting wagging tongues aside, Ariana did what Ariana does best and sang her dainty heart out.
Problem / One Last Time / Bang Bang