Prince William traded in diaper duty to show off his soccer skills while training with Football Association players on the grounds of Buckingham Palace to celebrate the league's 150th anniversary. Kate Middleton's other half sported a navy blue soccer uniform and sneakers as fans watched from the sidelines. Will jokingly told reporters, "I cannot tell you how excited I am that later today we will be playing football on my grandmothers lawn. One warning though, if anyone breaks a window--you can answer to her!" Will, who's the current president of the Football Association, also hosted a match as part of the festivities.