This Week's Hottest Hair

Reese Witherspoon, Kim Kardashian and more prove that getting glam is all about the hair! Get inspired by this week's most stylish dos – then click to find your best hairstyle. By Katherine Kluznik Rentmeester

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MOLLY SIMS

Giving her updo a romantic look, the actress pulls select locks loose to frame her face at the CNN Heroes event.

Give yourself a new look with InStyle.com's Hollywood Hair Makeover.