Prince William and Kate Middleton's expert-advised parenting hack the Queen disapproves of

Prince William and Kate Middleton have revealed some of their parenting rule with Prince George and Princess Charlotte [Getty]Prince William and Kate Middleton get very honest with the public about life as parents. And from time to time, Prince George and Princess Charlotte's mum and dad have even had to discpline them in front of the cameras. Remember that frustration Duchess of Cambridge face at Pippa Middleton's wedding? But there was one ...