Showing her dedication to staying in shape, Sienna Miller went for a run through a park in London, England on Wednesday (November 13).
The G.I. Joe: The Rise of Cobra starlet was joined by a personal trainer and donned an odd combination of traditional running clothes and a bulky parka as she put herself through the paces.
With the autumn season in full swing, perhaps Ms. Miller is having trouble adapting to the falling temperatures.
Meanwhile, Sienna has been hard at work on her new flick Business Trip and once thats wrapped shell be on to Mississippi Grind.