If time is of the essence, this hairstyle is your ace in the hole. (You feel us, Michelle Wie?) Start by making a sock bun, preferably up by the crown of your head if it's extra-hot outside. (Here's a quick sock-bun tutorial, or you can make things even easier with the Conair Hair Bun Maker, $4.) Tie a scarf that's at least three feet long around your head—pretend it's an Hermes for the glam effect —and you're ready to go in minutes flat.