Princess Diana and the future King Charles married on July 29, 1981, at St. Paul’s Cathedral in London in a ceremony that became a global television event. According to People Magazine, 750 million viewers in 74 countries tuned in, while 3,500 guests filled the cathedral. The cost was estimated at about $48 million, a figure that would be far higher today. The marriage later ended in divorce, but the wedding itself still holds a singular place in royal history for its scale, symbolism and the public fascination it generated.

Princess Diana and Charles Drew 3,500 Guests

The choice of St. Paul’s Cathedral helped define the size of the day. The venue had not hosted a royal wedding since 1501 and offered far more room than Westminster Abbey. Heads of state, political leaders and royal figures from across the world were among the guests, including Nancy Reagan, Princess Grace of Monaco and Margaret Thatcher. Outside, London was packed with spectators hoping to see the couple pass in their carriage. The ceremony also marked a major break with precedent: a British citizen was marrying an heir to the throne for the first time in 300 years.

Diana’s Dress Carried a 25-Foot Train

Diana’s gown became one of the most discussed elements of the occasion. Made from ivory silk taffeta, it was decorated with hand embroidery and 10,000 micro pearls. Its 25-foot train gave the dress its dramatic silhouette, while hidden details included a blue bow sewn into the bodice and a tiny gold horseshoe for luck. “At the time we wanted to make absolutely sure that the dress was a surprise,” Elizabeth Emanuel told People Magazine. Designers Elizabeth and David Emanuel even prepared a backup gown in case details leaked before the ceremony.

Diana Dropped “Obey” From Her Wedding Vows

The service carried both tradition and change. Diana walked down the aisle with her father, Earl Edward John Spencer, and chose to omit the word “obey” from her vows, a decision that drew attention well before the wedding day. The ceremony itself was not flawless. Diana mixed up Charles’ names, while Charles altered part of his vow and said “thy goods” instead of “my worldly goods.” He also forgot to kiss his bride at the altar. The moment was later corrected with the balcony kiss at Buckingham Palace, which became one of the day’s defining images.

The Royal Reception Included 27 Wedding Cakes

After the ceremony, a smaller group gathered at Buckingham Palace for the wedding breakfast. The menu included elaborate dishes, and the scale continued with dessert: the couple had 27 wedding cakes. The main cake stood five feet tall, weighed 200 pounds and displayed both coats of arms with floral decoration. Other details from the day added to its legend, from a registry said to include thousands of gifts to two identical bouquets prepared in case one was lost. Even decades later, the numbers behind the wedding still help explain why it endures.