(15 of 16) Star SiblingsWhen it comes to Hollywood, good genes are a must. And every once in a while, one family produces more than one star. From the Simpsons to the Olsens, sisters and brothers are taking over Tinseltown. Here, we feature our favorite sets of star siblings. Haylie and Hilary Duff The Duff sisters go glam at the premiere of their new flick, Material Girls, on Aug. 14.
