Now that the royal engagement of Meghan Markle and Prince Harry has been announced, let the ceremony speculation begin! While we know the venue (St. George’s Chapel on the grounds of Windsor Castle about an hour outside London), many burning questions still smolder: Who will be the bridesmaids? Who’s on the guest list? And don’t get us started on the dress. But one fashion moment has already been set…because it’s mandatory. As Duchess of Cambridge, Kate Middleton, like all royal women, must wear a hat to all official occasions. Since she basically rocks every style well, from feathery fascinators to cute felt pillboxes, we can’t wait to see what she comes up with for the ceremony. (Fingers crossed that the spring arrival of the newest royal family member doesn’t keep Mum at home with baby!) RELATED: 17 of Kate Middleton's Absolute Best Maternity Looks
