Sienna Miller vamps it up in bondage-style outfit

London, Apr 19 : Sienna Miller has just gone a step further in redefining her sexy image - the stunner vamped in a bondage-style leather outfit and shades to show her dark side for her new film 'G.I. Joe'.

The 26-year-old actress squeezed into the skintight suit for the action film.

Miller plays a ruthless femme fatale known only as The Baroness in the blockbuster, based on the classic army comic strip.

Her gun-toting character is an intelligence officer for an evil arms dealing organisation known as COBRA.

"Sienna's had a lot of fun with the movie," The Sun quoted a source, as saying.

"The Baroness is an extremely sexy but totally evil woman," the source added.

Former Doctor Who Christopher Eccleston, 44, also stars with Sienna in G.I. Joe - released next year.

ANI