After an athletic morning, Duchess Catherine changed into a ladylike gray Orla Kiely dress to join Prince Charles to visit the Prince's Foundation for Children and the Arts at the Dulwich Picture Gallery in London today. Kate Middleton showed off her hockey skills in cute red pants during a visit to the Olympic Park earlier in the day. She was representing her husband Prince William and his brother Prince Harry as well, since all three are serving as ambassadors to the Summer games. The boys are both away at the moment — William on tour in the Falklands and Harry taking care of his own official duties overseas — but Kate is doing a great job holding down the fort. Kate and the queen have made a number of appearances together in William's absence, but luckily he is expected to return from duty to get home to his wife and puppy Lupo soon.