Who: Creative director and president of J.Crew, veritable styling authority.
Why we love her: Too many reasons to count, really (doesn't everyone have a girl crush on Jenna?!). She could single-handedly be credited with taking the J.Crew label from a sleepier American classic to full-on fashion brand, with collections showing at Fashion Week and a slew of successful designer collaborations under her belt. But it's not just her business savvy; it's her personal style. She's launched a legion of Lyons fans all looking to mimic her effortless and totally uncanny sartorial eye, which is no easy task.
Key pieces: An unexpected arsenal of sequins, camo print, jacquard, boyfriend denim, and grandpa cardigans to mix and match. Rules to live by: layer fearlessly, and whenever in doubt, throw on a statement necklace and a great pair of heels.