The brown-haired, brown-eyed actress is 5ft 8in and was selected by Hello magazine last year as England's Number One Beauty. The 30-year-old has made it clear she won't go nude in her films. She says she's lucky to have a face that will fit a lot of different time periods, and owes her delicate features partly to her Burmese ancestry (she has a half-Burmese grandfather on her father's side).
Exercise
She has a personal trainer and enjoys daily workouts, particularly jogging on the treadmill.
Diet
The death of her father led to a minor teenage crisis: "If something happens when you are young, it takes a long time to get used to it, and I went off the rails: smoking too early and having a short anorexic phase."
Her weight at one time dropped to 5st. She doesn't have a huge appetite even today, preferring simple little meals throughout the day, rather than one big one. She is on record as saying that, sometimes, she has six eggs during the day, with periodic snacks of diced radishes.
"But I take lots of vitamins and I don't drink," she adds. "I do smoke, though. I'd be insufferable if I didn't!"
Love-Life
She had a four-year romance with singer Edmund Moriaty - "It was love at first sight." In March she separated from Welsh actor Michael Sheen, the father of her daughter Lily, aged four, after a nine-year relationship.