Second only to a royal wedding, the Kentucky Derby is the time for the hat—that oft-forgotten accessory—to really shine. Exaggerated toppers are nearly as synonymous with Derby Day as the horses are, so if you’re planning to watch the races on May 4, don’t go bare-headed. Find your favorite floppy sun hat or fanciful fascinator, and voilà. Just add pearls and a Mint Julep.