Miley CyrusTHE LOOK Low ponytail HOW-TO Apply a volumizing foam to wet, freshly-washed hair. Then part hair on the side and blow-dry section by section with a medium round brush, curling the ends of the hair. Apply a coat of hairspray to the entire head. Using the hand to mold the hair in a wave shape along the ear, pull hair into a ponytail and secure. Finish with another coat of spray. INSIDER TRICK Tie a satin ribbon around the ponytail and leave it loose (not in a bow) for an extra touch. BUY ONLINE NOW L'Oreal Texture Infinium Regular Hold Professional Hairspray, $17; amazon.com.