Kate Middleton let out a laugh as she hung out at the Olympics in London today. She was back in her Team GB polo shirt, jeans, and red running shoes for her latest day at the Games. Yesterday Kate took to the water to check out a sailing competition after attending track, gymnastics, and handball events over the weekend. Prince William joined her at Sunday's men's 100m track race after wrapping up his own polo match, but he's since returned to work with the air force. Prince Harry has also been making appearances in support of British athletes and has popped up at diving, gymnastics, and dressage events.