Joined by Kate Middleton, William and his handsome brother showed up at Harewood House where hundreds of spectators had gathered to witness the big event.
During the festivities, the Duke and Duchess of Cambridge stopped to talk to Claire Tupland, who also brought her balloon-wielding 22-month-old son Mason.
Will referred to his own youngster as he stated, "George would have popped that by now,” to which Kate added, “He's more interested in helicopters and anything with wheels."
Enjoy the pictures of Kate Middleton, Prince William and Prince Harry at the Tour De France Grand Depart in London (July 5).
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