Kate Middleton will have to follow a strict fashion rule when it comes to Prince Harry and Meghan Markle’s wedding next month. As a matter of fact, all of the ladies who will attend the wedding must follow the fashion rule. The future queen consort, Kate Middleton, will have to wear a hat. Not a fascinator, not a hairband, not a feather on a clip. It must be a hat. All of the women at Harry and Meghan’s wedding will have to wear one, including Queen Elizabeth II, Camilla Parker Bowles, Princess Anne and Meghan’s mother Doria Ragland, to name a few. The royal females will all be out in hats, it is not a rule exclusive to the royals. The Anglican Church requires women wear hats to religious events, such as christenings or weddings, but this is not a rule strictly adhered to by many people to church.