The Princess of Wales gown auction: which of Diana's dresses can you buy? - in pictures

A Zandra Rhodes white chiffon cocktail dress, worn to the Birthright benefit at the London Palladium, May 1987 Photograph: Christies/Getty Images

Catherine Walker burgundy velvet sheath with embroidered tailcoat, worn for the State visit to Korea in 1992, and to the premiere of Steel Magnolias, in aid of the Prince's Trust, 7 February 1990 Photograph: Christies/Tim Graham/Getty Images

A Catherine Walker sea-green sequined evening gown, worn for the State visit to Austria in 1989 Photograph: Christies/Tim Graham/Getty Images

A Bruce Oldfield black velvet evening gown, worn for an official portrait by Lord Snowdon and at the first night gala opening of Les Miserables at the Barbican centre, 10 October, 1985 Photograph: Christies/Tim Graham/Getty Images

A Catherine Walker black velvet and beaded evening gown, worn for the Vanity Fair photoshoot by Mario Testino at Kensington Palace, 1997 Photograph: Christies/Mario Testino

A Catherine Walker pink sequined ivory crepe gown with asymmetric neckline, worn at a banquet given by President Collor at the Itamaraty Palace while on a State visit to Brazil, 23 April 1991 Photograph: Christies/Rex Features

A Victor Edelstein midnight-blue velvet evening gown worn to the State dinner at the White House given by President and Mrs Reagan, when Princess Diana memorably danced with John Travolta, 9 November, 1985 Photograph: Christies/Corbis

A Catherine Walker burgundy crushed velvet evening gown, worn for a State visit to Australia and to the film premiere of Back to the Future, 1985 Photograph: Christies/Getty Images

Left: A Catherine Walker Mughal-inspired lavishly embroidered pink slubbed silk evening gown and bolero, made for the State visit to India, February 1992. Right: A Victor Edelstein bottle-green velvet evening gown, worn for private entertaining, Winter, 1985 Photograph: Christies