Prince William and his wife Kate joined Prince Harry yesterday to attend a wedding in England. The royals dressed up to watch William and Harry's first cousin, Emily McCorquodale — the daughter of Lady Sarah McCorquodale, the sister of princes' mother, Diana — wed. Lady Sarah and her husband Neil also welcomed her and Diana's brother, Charles, the earl of Spencer. Kate arrived for the ceremony wearing a hat from Whiteley and a tan dress with a matching coat. Kate tried something new with her hairstyle, and finished the outfit with her favorite tan heels from LK Bennett. The bash took place in Stoke Rochford in Lincolnshire, about two hours from Kate, William, and Harry's London home. The royals may have another party today, as it's the 91st birthday of Harry and William's grandfather. Prince Philip was released just yesterday from the hospital, where he'd been recovering from a bladder infection.