Hannah Bronfman
There was a time when Hannah Bronfman was the ultimate party girl. In fact, you wouldn't accept an invitation unless it said she'd be DJing. But, Downtown though she was, her claim to high society fame was of course her father's family's billion-dollar Seagram fortune and his CEO status at Warner Music Group. While she can still occasionally be found behind the turntables (or sitting in front rows, or posing on step-and-repeats), Bronfman is more likely to be taking shots of green juice than anything else. Over the past few years she's gone full fit-chick and wellness guru (à la Gwyneth), launching her own version of Goop, HBFIT.
[Photo via @hannahbronfman]