In June 1997, Diana, Princess of Wales sold 79 of her dresses at Christie's auction house in New York. Buyers paid $2,000 for a leather-bound catalogue and up to $200,000 for a single dress. But late that summer, with her tragic death in Paris, the new owners found that they owned something more than a dress - they were in possession of a sacred relic. With archive footage of Diana and exclusive interviews with the designers and the owners, this program explores the appeal of these dresses and the unique role they play in her legacy.