Want long, loose waves like Fergie and Avatar star Zoe Saldana? The trick is all in how you hold your curling iron. I always used to curl my hair the old-school way: by clamping a section of hair in a curling iron, then holding it horizontally while rolling it up toward my scalp. The way to get these modern loose waves is to first hold your curling iron vertically—so the tip of the iron faces the sky. Then take a section of your hair, spray it with flexible-hold hair spray—like Alterna 10 Hair Spray (alternahaircare.com for retail salon locations)—and wrap it around the vertical hot iron. Hold hair by the ends in place for 10 seconds, then release and watch your wave take new shape!