Camilla Belle's look is easier to recreate than you might image, yet it is formal enough to wear to a black-tie event.
To duplicate Camilla's style, begin by curling hair with a medium-barreled curling iron or setting tresses on hot rollers. Next, backcomb thoroughly all along the front hairline and back through the crown. Then, make a side part and loosely pull back a three-inch swath of hair beginning at the front hairline maintaining as much volume as possible. To hold the hair in place, insert a decorative comb vertically with teeth positioned toward the face. You could also use a barrette or bobby-pins to secure the strands. Repeat on the other side and finish the look by misting with hairspray.