Kate Middleton Pictures at Diamond Jubilee Pageant

Princes William and Harry joined their family today for a special boat ride down the Thames in London as part of their grandmother Queen Elizabeth's Diamond Jubilee. William's wife, Kate, wore a chic red Alexander McQueen dress and jacket to take part in the celebrations, and her whole family — mom Carole, dad Michael, sister Pippa, and brother James — were along for the fun. Kate finished her outfit with a hat from James Lock & Co. and a dolphin pin, a gift from the Royal Navy Submarine Service. The princes dressed up as well, with William in his flight lieutenant ensemble and Harry in Blues and Royals ceremonial dress.

Today's Thames Diamond Jubilee Pageant is made up of 1,000 boats from across the globe. Queen Elizabeth and her grandchildren, as well as her kids Prince Charles and Princess Anne, traveled in the royal barge, the Spirit of Chartwell. The queen wore a special Swarovski crystal-embellished ensemble created by Anna Kelly, and Prince Charles's wife, Camilla, donned Anna Valentine. The royal barge's tour down the Thames ended at London's Tower Bridge, where the royal family planned to watch the rest of the vessels sail further down the river.