Mar 25 2012 A half-up coiffure is the perfect go-to look when updos seem just a bit too formal. This week, the red carpet was rife with these in-between hairstyles of sorts, with stars like AnnaLynne McCord, Lily Collins, and Ahna O'Reilly all wearing their own take on the look. For AnnaLynne, her half-up hair received a bit of a twist, with a portion in the back coiled around the base of her hair elastic. Lily went for a '60s bump and voluminous waves, while Ahna chose an off-to-the-side French braid. But deciding is half the battle; if you had to pick your favorite, which celebrity wins out?