Nerdy Actors That Turned Out To Be Total Heartthrobs

Hayden Panettiere

David LEFRANC/Gamma-Rapho via Getty Images (left), Jon Kopaloff/FilmMagic via Getty Images (right)

Hayden Panettiere has been acting since she was just 11-months-old and soon went on to have small roles on different television shows. One of her most prominent recurring television roles was on Malcolm in the Middle, where she played Jessica, Malcolm’s manipulative next-door-neighbor. On the show, she had glasses and sometimes incredibly frizzy hair, but she would soon ditch the frumpy ‘do and go on to more prominent roles in Ice Princess, Bring It On: All or Nothing, and her most popular role, Claire Bennet on Heroes. Anyone remember “save the cheerleader, save the world?”