Our Best of Celebrity Fitness Bracket is underway and some of Hollywood's fittest stars are looking to take the crown. If newlywed Jessica Biel wants to remain the fittest of them all, then she's up against some tough competition — a princess and rock star included. But, there are gym lovers like Nicole Richie and Ashley Tisdale who could surprise us all. Since every vote counts, complete our celebrity fitness bracket today and pick your favorite toned star of the year! Click here to play now!