Photo SpecialStar Hair: Get the Look!

What Not to Wear's hair guru Nick Arrojo tells you how to style your tresses like Jessica, Sienna and eight other celebs. By Serena Kappes

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JULIA ROBERTS

How to get the look:
1. Use a volumizing mouse or styling spray.
2. Let hair dry naturally or blow-dry with a diffuser.
3. With a large-barrel curling iron, roll sections, leaving at least 4 inches from the root. "You'll achieve a natural texture with some finished pieces on top," says Arrojo.

Bonus tip: To blend straight bangs with the waves, "make sure they don't have any definitive parting," he says.

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