Prince Albert II of Monaco and Charlene Wittstock – $65M

Prince Albert II of Monaco hosted one of the most expensive weddings in history! Prince Albert II is the son of Prince Rainier III and American actress Grace Kelly—one of the most famous film stars in history. The love of his life is Charlene Wittstock, a South African Olympic swimmer. The engagement ring that the Prince gave her had at its center, a three-carat diamond with a pear shape and around it were round-shaped diamond brilliants. They actually had two ceremonies—one religious and one civil. Both events were extravagant and totaled to $65 million! No money disputes for this dashing prince.