Kristen BellTHE LOOK Long and straight with a headband HOW-TO Add a little volumizer to wet hair to give hair fullness, then blow-dry with a medium-size round brush. Push hair away from the face with a skinny headband. INSIDER TRICK "Make sure that the headband is not too thick," says stylist Jerome Lordet. "You want to keep it elegant versus a schoolgirl look." BUY ONLINE NOW Skinny leopard headband, J.Crew, $14; jcrew.com.