Sienna Miller
Fitness Regime: To prepare for her role as The Baroness in “GI Joe” Sienna took on a special four-month training program that included an hour of boxing each day, biking, and weight training.
Fameball:
http://www.fameball.com/Star/Sienna_Miller
Diet Regime: Sienna complemented her workouts with a balanced diet.
Goals: Look like a fighter
Website: Sienna Miller’s GI Joe Training