The Princess of Wales has sent a heartfelt birthday message to Prince William and shared a new photo of Prince George, Princess Charlotte and Prince Louis with their father. The photograph of Prince William with his children was taken in Norfolk last month by Princess Catherine. William, George, Charlotte and Louis are holding hands as they jump in the lovely picture. Prince William is celebrating his 42nd birthday today and the Princess of Wales accompanied the photo with a heartwarming caption. Kate wrote on the couple’s official social media account: “Happy birthday Papa, we all love you so…