Sienna Rose Miller (born December 28, 1981) is a British/American actress, model, and fashion designer, best known for her roles in Layer Cake, Alfie, Factory Girl, The Edge of Love and G.I. Joe: The Rise of Cobra. In 2007, the London Film Critics named her British Actress of the Year for Interview. In 2006, she designed fashion capsule for Pepe Jeans.
Miller's relationship with Alfie co-star Jude Law was fodder for the entertainment press. On Christmas Day 2004, they became engaged. On July 8, 2005, Law issued a public apology to Miller for having an affair with the nanny of his children. After attempting to salvage their on/off relationship, Miller and Law finally separated the following November.
Miller dated Welsh actor Rhys Ifans from 2007 to June 2008. After her relationship with Ifans ended, Miller began a relationship with actor Balthazar Getty, who was separated from his wife, designer Rosetta Getty (nee Millington). Later that year she began dating actor Tom Sturridge.