Who: Jessica Alba What: Bardot Hair How-To: At the premiere of Mechanic: Resurrection the actress and mogul gave us full on '60s, tugging her hair up into a soft half updo that was bumped up at the crown. But there's a reason it looked modern: Loose, face-framing pieces pulled out in front. And no, they weren't hit with a curling iron. (That would look too prom.) Editor's Pick: Verb Hydrating Shampoo, $14, sephora.com.