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

10 of 11

SCARLETT JOHANSSON

Putting her own spin on the season's fuller coifs for the London premiere of her film The Spirit, the actress adds volume at the crown that flows into cascading curls.

See last week's hottest hair!

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