Daily Star's biggest headlines straight to your inbox!Princess Diana would be "very proud" of Prince Harry and Prince William for letting their wives speak out regularly, insists her childhood friend Sarah "Fergie" Ferguson.The Princess of Wales and Duchess of York Fergie built up a strong friendship in the early years of their lives in the Royal Family.Diana had been under intense scrutiny since her marriage to Prince Charles, so the arrival of the Fergie was seen by many to lift some of the pressure.And the Duchess has now revealed that she thinks the Princess of Wales would be utterly smitten with every single one of her grandchildren – from both Prince William and Prince Harry's sides of the family – and Kate Middleton and Meghan Markle.