Melbourne, July 26 : Sienna Miller has said her costume for her latest film `G. I. Joe - The Rise Of Cobra' often left her smelling like a "dead cow'''' after a long day on the set.

The actress, who plays the role of a leather-clad baddie Baroness in the 200-million-dollar blockbuster, revealed she had to squeeze her tiny frame into an even tinier spray-on outfit.

The star added getting dressed took "a few people and a lot of lying down and wriggling to get into,'''' reports The Daily Telegraph.

The 27-year-old further confessed the bottom in the promotion poster was airbrushed.

She said: "You can safely say I''ve been enhanced in several areas. It''s like J. Lo is G. I. Joe - I wish that was my bum, but it''s not.'''' (ANI)