Betty Who

Betty Who on August 3rd, 2014 in Grant Park, Chicago photographed by Ramona Rosales.

Ramona Rosales

They're really good!

At Lollapalooza over the weekend, Aussie singer-songwriter Betty Who and DJ/production duo The Jane Doze challanged each other to a Billboard-run game of 'Heads Up'...and everyone showed up to play.

Turns out, all three of them know their celebrities pretty well.

Lollapalooza 2014: Full Coverage

Who emerged victorious? Watch below: