Hailey Bieber – Model and Beauty Entrepreneur, 25

Hailey Bieber has been thrown some curveballs this year, including a serious health scare. But the model, style star, and newly minted beauty mogul is ready for anything.

- By Rachel Tashjian

Hailey Bieber is one of the best-dressed women alive, in part because she's so willing to mess up. "I look back on things that I've worn and I literally am so embarrassed. I'm like, what was I thinking?! That was such a miss," she tells me from Idaho, where she and her pop-superstar husband, Justin Bieber, have disappeared for a mini vacation. It's a surprising confession for someone who telegraphs such confidence, whether she's going to the gym or Oscars parties, and whose style is so obsessively chronicled.

Embarrassment, though, is different from regret. "I'm never afraid to try anything. I think that just goes to show that there's a moving evolution [in my style]. It just keeps growing. Which is kind of how I want to be in all areas of life." Bieber, who is 25, describes herself as "a very regimented and routine person." She grew up a Hollywood kid, the daughter of actor Stephen Baldwin and Brazilian-born Kennya Baldwin, and trained as a ballerina. Yet part of what makes her so successful is her ability to deal with change. In the past year, she went through a personal health trauma, experiencing a strokelike episode from a blood clot in March. Then in June, Justin was diagnosed with Ramsay Hunt syndrome and experienced facial paralysis, which led him to postpone a string of U.S. tour dates. That same month, Hailey launched a skincare line, Rhode (her middle name), which had been in the works for more than two years and is already winning kudos from discerning beauty fanatics.