Carrie UnderwoodTHE LOOK Half-up straight hair HOW-TO Blow-dry hair with a large, round brush. "Tease a triangular section of hair from the front of the head and tease the base," says Nelson Chan of Nelson J Salon in Beverly Hills. "Hold the section in a little ponytail, twist and pin it." INSIDER TRICK You can use a clear elastic instead of a pin to secure the hair. BUY ONLINE NOW Snag-Free Hair Elastics, Intuition Blax, $3.50; beautysak.com.