Royal fans saw a sweet father-son moment between Princes George and William as the doting dad showed his eight year old son how to wear cufflinks. Prince William, Kate Middleton and their two eldest children George and Charlotte, six, promptly arrived at this evening’s Party at the Palace located outside Buckingham Palace. The Cambridge’s youngest Prince Louis, four, wasn’t with the family for the affair, and was likely being looked after by their “loyal nanny” Maria or Kate’s mother, Carole.