My stepdad always said, "If you're going to believe the good, you're going to believe the bad." I think that's really important.

I grew up as a horseback rider and a volleyball player so honestly when I got a gym membership in New York, I thought I was going to die.

I used to go on runs, it's kind of hard for me now unfortunately in Paris because it's a little bit hectic. My knees aren't that great, so recently I haven't been on the treadmill that much but that's why I like to box on a soft floor. It's good for me.

My fitness inspiration has always been athletes, my whole life. Serena Williams is a great friend of mine and Ronda Rousey - we did Sports Illustrated together. Obviously, following powerful women and seeing their bodies and how hard they work is really inspiring to me.

I've always looked at people like Carine Roitfeld, Donatella Versace, DVF...people who when you walk on a set you feel like they still have so much excitement for what they're doing every day and they just have so much youth even though they've been doing it for so long. Every day just working to keep a young spirit - because even when you're young that's hard to do, because you get so caught up in things. I just think it's so important to make an effort every day to have a young spirit. Then when you get older, you always kind of keep that.

There's always stories about cute girls in the gym, I'm just not one of those people.

When I moved to New York, obviously I work with a lot of high fashion brands and I get to wear insane, totally crazy bags and all this crazy stuff but still, I'll always go back to my original sense of style.