How to Get Sienna Miller's Hairstyle. Sienna Miller has beautiful hair and hair long locks always look shiny, healthy and well taken care of. Now you can learn how to get her girl next door beach waves by following the tips below.

1. After washing, fight flyaways with a humidity blocking product that also seals in hydration for long lasting sleekness (like Frederic Fekkai Marine Summer Hair Zero-Humidity Frizz Control). 2. Then add lift and volume at the roots. Adir used Frederic Fekkai Coiff Bouffant Spray Gel to get the job done. 3. Next, blow dry completely before curling. Adir used a 1 1/4-inch curling iron and wrapped hair around the iron in small sections, leaving the ends out. 4. Once the curling is done, apply a finishing cream on little chunks of hair to create separation on the ends.