Sienna Rose Miller was born in New York City but raised in London, England. Her father, Ed Miller, was an investment banker, then a Chinese art dealer, joined a cult and wrote a spiritual self-help book. Her mother, Josephine Miller, was a South African model and a personal assistant to David Bowie. She went on to run the Lee Strasberg Theatre and Film Institute in New York City, and then became a yoga instructor. Sienna has one older sister, Savannah.
Sienna proceeded to model for Coca-Cola, Italian Vogue, Prada and the 2003 Pirelli calendar. Indeed, as her fame has grown, so has her modelling career: Sienna signed a deal with Pepe Jeans London, which spanned from 2006 to 2008; in 2007 she became the spokesperson for Italian fashion label Tods – the first time the brand had used a celebrity face – and she has appeared on numerous magazine covers, including the December 2004 and February 2006 issues of British Vogue and the September 2007 issue of US Vogue, all of which show she still pursues modelling somewhat alongside her acting career.
Miller resumes the leading role in the Edie Sedgwick biopic Factory Girl, and on Aug. 17, she and Law are photographed together for the first time since news broke of Law's affair, appearing to be back on. But by October, Law calls the relationship off after reports link Miller with her Layer Cake costar Daniel Craig. The following month, they're back on. "We're working things out," Miller tells Extra.