Wedding guest lists are dangerous territory. How many people should the parents invite? What if one half of the happy couple brings more guests than the other? Are old flames welcome? All these problems are multiplied a thousandfold if you're the heir to the throne of the United Kingdom and your wedding is going to be watched by a billion people worldwide and your family has a few shady connections. There have already been complaints about the strict invite policy no plus ones! but who did make the cut? The royal invitation list includes toffs, exes, celebrities, dubious billionaires, and a pair of shady uncles. Here's a crowd-spotting guide for those watching at home.