Depending on the size and shape of said hats, racegoers are forced to find inventive ways to stand up straight, pose for cameras and even kiss each other hello. Ahem, Camilla, Duchess of Cornwall:
Some hats, like the one chosen by Queen Elizabeth II, are simple, lovely and practical. Others, like one below with a parrot and butterfly floating on the top, are, well, not as much.
Take a look at some of the most intricate, beautiful hats of the first day of Royal Ascot below -- from absolutely sensical to complete and utter gorgeous nonsense.