The messy pony is every girl's best friend.

Thank goodness this look stays in style! A messy pony works for every hair type, as long as it has sufficient length. Having a few, shorter pieces down in front, like Blake Lively has, adds to the overall appeal, but otherwise, don't be too strict. You can have some lumps and bumps in it, and it's just fine -- perfect ponies are for the Sock Hop!