Hilary Duff Beachy Waves

Hilary has a two tone effect with darker strands near the top and lighter ones going out toward the ends.

Hilary Duff

Bumble and Bumble Surf Spray can help with the salt water effect. Scrunching wet locks with fingers is one way to achieve a similar look.

This photo was taken at an autograph signing for new novel "Elixir"