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

REESE WITHERSPOON

For the L.A. premiere of Four Christmases the actress channels Grace Kelly, shaping her bob into a classic waved coif.

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