Gabrielle Union’s Falling Down Updo
STAY COOL TIP Union’s hairstylist Kiyah Wright gave her hair a few twists around a curling iron with a one-inch barrel to give the ringlets bounce and shape, then pinned hair into a low updo. “This look is great for an evening on the town, or even for an formal event like a wedding,” Wright said. “I let a few curls frame Gabrielle’s face to create a soft effect, and used very little product aside from hairspray to set the look.”

Emma Roberts’s Fashion Ponytail
STAY COOL TIP Marcus Francis gave Roberts this ultra-high ponytail for the premiere of Scream 4. “There are two things to keep in mind when creating this ponytail,” Francis tell us. “First, follow the natural line of your cheekbone when pulling your hair back. And when in doubt, aim higher.” Secondly, he suggests tilting your head back as you gather. “It leaves the hair at the nape tight and clean,” he says.

Halle Berry’s Tousled Pixie
STAY COOL TIP If humidity makes your short hair puff, embrace the extra lift at your roots. Warm a dab of styling wax or paste like Shu Uemura Art of Hair Shape Paste between your palms, then use your fingertips to twist, mold and paste small sections as you see fit. A blast of cold air will set the free-form style.

Jennifer Lopez’s Wild Curls
STAY COOL TIP Loosen tightly clenched coils with a dollop of Moroccanoil Intense Curl Cream, which softens and defrizzes tendrils with a nourishing blend of argan oil and hydrating antioxidants.