What does one wear to the Royal Garden Party? Well, a floral fascinator seems like a great place to start! After previously attending the Chelsea Flower Show and celebrating the royal garden she helped co-design, Kate Middleton popped up at the annual Buckingham Palace party with Prince William on May 21. The Duchess of Cambridge wore a pleated Alexander McQueen coat dress, which she paired with a Juliette Botterill hat, Loeffler Randall clutch, and Gianvito Rossi heels. If the head-to-toe pink outfit seems familiar, it's because Kate is famously a fan of monochromatic outfits. Hey, she likes what she likes! See photos of her latest ladylike outfit ahead.