Sarah Jessica ParkerTHE LOOK Pinned-under high ponytail HOW-TO Use a bodifying product on wet hair, then blow it out with a round brush to get it straight with body, says stylist Michael St. Germain. With a flat boar bristle brush, pull the hair up into a high ponytail and secure with an elastic. With one hand, scoop the ends of the ponytail up and tuck it under itself and pin with two bobby pins criss-crossing each other. St. Germain recommends finishing with Davines spray. INSIDER TRICK Always use coated elastics so they don't break your hair and avoid ones with metal closures as well. BUY ONLINE NOW Davines BIO_O Strong Hold Hair Spray, $25; folica.com.