Prince William and Catherine Middleton’s royal nuptials were so lavish—the celebrity guests, the McQueen dress, the cake!—we’re still dreaming about them one year later. (Happy Anniversary, Will and Kate!) But in the name of diplomacy, we’ve rounded up more over-the-top royal matrimonies that will make you swoon. Click through to see the weddings of Grace Kelly, Princess Diana, and more unforgettable royal affairs.