Prince William and Kate Middleton's nuptials may be the biggest royal wedding of the new millennium, but William's parents, Prince Charles and Diana Spencer, had a now-legendary wedding that was so spectacular, it set the bar for every future royal ceremony. It was a wedding so grand, the world wasn't prepared for such a spectacle from the nervous young couple that appeared when they announced their engagement. Take this quiz to find out how much you know about Charles and Di's big day.