This long bob is mussy. To get a mussy bob, spray in a beach salt spray (I like Bumble & Bumble's) and scrunch hair as it dries.
To blow dry this cut into a sleek bob, follow these directions:
1. A volumizing shampoo and mousse if you have fine hair. Notice how Catherine's hair is anything but limp.
2. A large, paddle brush. Don't use a rounded brush on this cut, because you don't want the ends to curl under.
3. A decent flatiron. (You can wear this look wavy, too).
4. A gloss spray for after you iron. Bumble and Bumble discontinued their Gloss (why? why?), but their new Shine spray gets high marks in the industry.