Sexy hair isn’t hard to get.
Wash it, semi dry it, put some moose on it, sleep on it.
These are the four steps to achieve the sexy celeb hair style.
Mischa Barton’s sleek and thin natural hair probably isn’t easy to tousle but here is a good example of a sexy tousled hair style:

[...] Rise of the Planet of the Apes is definitely this summer’s hit. So is Freida Pinto’s hair style for the recent event of the movie. Absolutely gorgeous thick glossy hair parted in the middle and gently weaved at the back. It is an easy do but only if have Freida Pinto’s naturally thick and soft hair. [...]