Kate Middleton, 40, was the third wheel to Prince Charles, 73, and Camilla Parker Bowles, 74, during a royal outing on Thursday, Feb. 3. The Duchess of Cambridge was without her husband Prince William, 39, as she joined his father and stepmother at The Prince’s Foundation’s Trinity Buoy Wharf in London. The trio were there to witness the training site for arts and culture run by the Prince of Wales’ educational charity that he established back in 1986.