It was the kiss that sealed a fairy tale and began a royal wedding tradition. No one was expecting Prince Charles and his bride, Lady Diana Spencer, to actually lock lips on the balcony of Buckingham Palace after their wedding on July 29, 1981, but they took everyone by surprise by agreeing to the crowd's calls for a kiss. That one smooch started a trend and became an iconic image that still has an air of romance — even though we know there was no happy ending for this pair.