A dress (left) by designer Regimes worn by Britain's Diana, Princess of Wales, at the Ball at Althrop House in 1979, and a dress (right) by designer Catherine Walker, worn in Hong Kong in 1989, are on show at an exhibition titled Diana: Her Fashion Story, at Kensington Palace in London, which opened yesterday. The show charts how she not only rewrote the rules of royal dressing with a more informal style, but also expressed herself through her fashion choices before her 1997 death in a car crash in Paris, aged 36.