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Leighton Meester's (a.k.a. Blair Waldorf) twisted updo

If you don't have thick hair, clip on a layered extension that runs from ear to ear in back. The extra strands will give you lots of twists in the back.

Step 1: Apply a pea-size dab of grooming cream to dry hair (try Bumble and bumble Grooming Creme, $25). "It will help your hands move through it better," LeCompte says. Apply a second pea if hair feels dry.
Step 2: Using your fingers, pull back a 1-inch section and twist it until it twists onto itself; pin it in place.
Step 3: Load the back of your head with twists.
Step 4: Allow any little pieces that fall out, to stay out. It's a not-perfect look, so don't sweat the imperfections.