Hollywood starlets take their workouts seriously! We've rounded up 64 female celebs in tip-top shape, but we want you to pick the fittest of them all. Gwyneth gets her sweat on dancing with Tracy Anderson dance workouts, and Ashley has been training to kick some ass in the Twilight series — but who do you think is more fit? There are other fit chicks to choose from too — Jessica Biel, Cameron Diaz, and even Kelly Ripa.
Just head over to the fittest female celeb bracket and start clicking on your picks! Go through the first-round matchups by picking who you think deserves the fittest female of 2011. Once you've finished the first round, we'll take your favorites and pair them against each other until there is only one winning celeb left!