Voluminous, healthy hair may be your goal, but for many of us, Farrah Fawcett-like strands don't come naturally. It turns out, getting bigger hair doesn't require too much teasing, or even Bumpits. Celebrity stylist Ben Skervin, who has worked with stars such as Keira Knightley and Katy Perry, reveals four easy ways to create the illusion of thicker strands.