Covered in blood and carrying a large gun, Sienna Miller cuts a commanding and scary figure. But fortunately the actress isn't on any death mission but filming on set for her new film G. I. Joe in Prague ... The usually blonde starlett dyed her hair dark for the role which sees her play an intelligence officer for evil arms dealing organization COBRA. Her character, based on the classic army comic strip, is an evil but sexy woman and despite the fake blood and gun, Sienna still manages to look great on camera. A smiling Sienna is obviously enjoying showing her darker side with sources revealing the 26-year-old has had a lot of fun while filming the role.
Woot! Sienna looks great as The Baroness. I must admit, I had my doubts when I heard that she would be playing the role of this femme fatale but I like what I see thus far. I have high hopes for this movie ... I was a huge GI Joe fan when I was little ... I hope they do right by me. Judging by the costumes alone, I think they're on the right track thus far. [Source, Source]