Princess Diana’s famous "revenge dress" will be sold at auction again, more than 30 years after she first wore it. The black silk dress, designed by Christina Stambolian, will be sold by the auction company Sotheby’s. It is expected to sell for up to $300,000 (£220,000). Diana wore this dress to a special dinner at London’s Serpentine Gallery in 1994, on the same day a TV programme showed her husband, Prince Charles, admitting that he had been unfaithful.

Diana chose this dress because she wanted to make a strong impression. Before the event, she had planned to wear a different outfit, but changed her mind and chose the bold, off-the-shoulder dress by Stambolian. This dress became famous in the media as the "revenge dress" because of the attention it received.

The most important result is that this dress became one of the most recognisable and talked-about outfits Princess Diana ever wore. It remains a powerful symbol of how one dress choice can make worldwide news and become part of history.