The average American wedding costs more than $33,000. But there's nothing average about royalty -- or the parties they throw when they get married. From 15th century celebrations of love to the much-hyped upcoming marriage of Prince Harry to Meghan Markle, the world loves to revel in the drama, pageantry, and gushing excess of riches that make royal weddings, well, royal. (Even if modern couples tend to look for ways to cut expenses.) Estimated totals are given in today's dollars.