HOW-TO Hairstylist Ward Stegerhoek washed Swift's hair with Living Proof No Frizz shampoo and conditioner. When hair was dry, he curled it with a large iron and used a wave-defining spray. Next Stegerhoek lightly brushed her strands to smooth out the waves and misted with holding hairspray. INSIDER TRICK Use a bigger curling iron on naturally curly hair to create looser, more sophisticated waves. BUY ONLINE NOW Living Proof No Frizz Conditioner, $24; livingproof.com.