Sienna Miller  has ditched her long locks in favor of a chic asymmetrical bob. The actress debuted her new look when she dropped by the Chiltern Firehouse in London on Wednesday with Tom Sturridge. Sienna has been varying her usual look of boho blond waves and recently dyed her hair a dark red color  to film American Sniper. (Which she later dyed to a strawberry blond, above, after filming wrapped in June.) However, it looks as if Sienna decided it was high time to cut off her locks. Maybe Sienna was inspired by the recent "lob," or long bob, hair trend that has taken over Hollywood ? Keep scrolling to see Sienna's new 'do.