2. Pony Up
"The classic ponytail is another favorite, be it high, as Tyra is wearing, or low, as Ciara is wearing. A ponytail is a do-it-yourself hairstyle that will create a chic look instantly,” Derek testified. In the past, ponytails were seen as a more casual ’do, but thanks to many celebs rocking the pony in sexy new ways, it’s no longer seen as a hairstyle cop-out. The best way to ensure that you’re rocking a ponytail right is by keeping the rest of your hair sleek and smooth with the help of a lightweight shine serum like Kerastase Elixir Ultime ($54, kerastase-usa.com)






