We’re starting with the most elegant of brides ever: Princess Diana of Wales. At just 20 years old, she married Prince Charles on July 29, 1981, and wore a dress reportedly worth 12,000$ at the time. The gown was estimated to be approximately $31,000 in 2016. The gown, designed by Elizabeth and David Emanuel, featured a stunning 25-foot train, hand-embroidered details and a whopping 10,000 pearls.