This Week's Hottest Hair

Jessica Simpson, Jennifer Lopez and more prove that getting glam is all about the hair! Get inspired by this week's most stylish dos – then find your own best hairstyle. By Katherine Kluznik Rentmeester

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JESSICA SIMPSON

Long soft waves highlight the singer's blonde hue at the launch of her fragrance Fancy at Macy's in Chicago.

Try on your best hairstyle with InStyle.com's Hollywood Hair Makeover.