4. Sienna Miller

4. Sienna Miller

All right, this one’s actually kind of hard. On the one hand, long hair gives Sienna this approachable, sun-kissed girl-next-door look. It makes her look like the type of person we’d love to befriend or take on a beach holiday. On the other hand, the long pixie she sported a few years makes her look like a charming little fairy. Like a hip Tinkerbell.

Verdict:  Short hair. The long hair’s pretty, but lacking in character.