William and Catherine share new photo to mark 15th wedding anniversary BBCKate Middleton and Prince William Mark 15th Wedding Anniversary with Sweet New Family Photo People.comPrince and Princess of Wales mark 15th anniversary with holiday photo The TelegraphEvery Gorgeous Photo From Prince William and Kate Middleton’s 2011 Royal Wedding Town & Country Magazine‘Joyful and at peace’: Princess of Wales releases ‘never-seen’ family photo with George, Charlotte & Louis Good Housekeeping