Well, nobody saw this coming!
Well... it's who he left the club with that's causing a stir:
Charli XCX always wants to make us go Boom Clap with our hands whenever she performs, and tonight was no exception!
Luckily for everyone watching the VMAs pre-show, she sang the hit song live, and it was incredible!
Ch-ch-check out her boom and clap-worthy rendition (above)!!!