2017 is the 20th anniversary of the death of Diana, Princess of Wales. As one of the most famous women on the planet, Diana had an acute sense of the importance of fashion, controlling her own image and understanding that clothing could be an art form with extraordinary potential to convey message and meaning. This documentary, produced in collaboration with Historic Royal Palaces and presented by Brenda Emmanus, looks at some of Diana's most celebrated and exquisite dresses, brought together for a new exhibition of her clothes at Kensington Palace in February. Brenda visits the Conservation Studio at Hampton Court Palace as the dresses are prepared for display, and she hears from historians, cultural commentators and the designers who dressed Diana, including Elizabeth Emmanuel, Victor Edelstein and David Sassoon.