Scarlett JohanssonTHE LOOK Romantic loose updo with headband HOW-TO Stylist Laurent D. says to prep hair with hairspray. Then curl sections of hair around the entire head with a 1 ½-inch curling iron. When done, back-comb a little around the crown to create volume and pull the hair back, twisting and pinning pieces up. Comb a few pieces down around the face before placing a headband or tiara in the hair. INSIDER TRICK "To achieve this look, you need to have a day-old blow-dry because the hair will hold better," says Laurent D.