The Cut: “I was inspired by the effortless beauty of French women in the sixties, like Jane Birkin,” says Biel’s hairstylist Abergel. He chopped into thick, eyelash-grazing bangs with thinning shears to take out the weight. “That way she can wear them swept to the side as they grow out,” he explains. He also added long layers to the bottom few inches of hair. What You Should Know: Wish your strands looked thicker? The blunt ends here create the illusion of more hair. “Make sure your stylist knows not to layer around the cheekbones, which gives more volume on top, but makes the ends look too fine,” advises Abergel.