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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MADONNA

The Material Girl adds retro waves and a soft side part to her blonde locks at the Gucci UNICEF dinner in N.Y.C.

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