The dress Princess Diana wore at her 1981 wedding to Prince Charles went on public display Thursday at the late princess’s former home in London.

The taffeta-ruffled white dress designed by David and Elizabeth Emanuel, with its 25 foot (8 meter) sequin-encrusted train, helped seal the fairytale image of the wedding of Lady Diana Spencer and the heir to the British throne.

Her sons, Prince William and Prince Harry, have loaned their mother’s wedding dress for the exhibition “Royal Style in the Making.” The exhibit also features sketches, photographs and gowns designed for three generations of royal women, including Princess Margaret and the Queen Mother. It runs until Jan. 2, 2022.