Sienna Miller: Baroness in Beverly Hills

Sienna Miller sports a Chanel shirt outside the Anastasia Salon in Beverly Hills on Friday afternoon (May 29).

The 27-year-old British actress recently told ET that wore a black wig for her role as The Baroness in the upcoming live-action adventure G.I. Joe: The Rise of Cobra.

“It was not a dye job,” Sienna said. “This is an old-fashioned tale of good versus evil, and historically the good guys tend to be blonde, and lighter, and the bad people tend to have black hair, like witches — it adds to villain-esque behavior. And also, she’s a very famous character within the cartoons and there’s a specific way that she looks, the same with Scarlett with the red hair, and so we had to be true to the characters the way they were created.”