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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JENNIFER LOPEZ

Talk about a bombshell! The singer shows how sexy is done, amping up the volume on her tousled waves for the L.A. premiere of The Curious Case of Benjamin Button.

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