Kate Middleton's Coordinated Outfit Will Make You Want to Match All Your Clothes

It's not a rarity to see Kate Middleton showing off a fascinator — and even a tiara on occasion — but this may be our favorite hat to date. The duchess arrived with Prince William and Harry at her side to attend the Commonwealth Day service and managed to outshine them both. She chose a digital lace-printed coat from British designer Erdem, which she finished with a John Boyd hat and Rupert Sanderson heels. And, while we're wondering what dress she slipped on underneath her beautiful coat, it almost doesn't matter. With a hat that good, we're fixated on little else. Read on to see the standout look from all angles.