This post may contain links from our sponsors and affiliates, and Flywheel Publishing may receive compensation for actions taken through them. 24/7 InsightsThe world’s most expensive weddings have cost up to $1 billion. Many of these weddings included celebrity guests and performers. The challenge is that weddings can cost a small fortune today, and many people are forced to make a sacrifice or two to keep costs down. It’s safe to say that no detail whatsoever was spared to help pull off this $600 million wedding.