Wedding dress of Lady Diana Spencer
Lady Diana Spencer's bridal gown was an ivory silk taffeta and antique lace gown, with a 25-foot (7.6 m) train and a 153 yards (140 m) tulle veil, valued then at £9,000 (equivalent to $34,696 in 2025). It was worn at Diana's wedding to Charles, Prince of Wales in 1981 at St Paul's Cathedral.
Source: Wikipedia — Wedding dress of Lady Diana Spencer (CC BY-SA 4.0)