Catherine, Duchess of Cambridge, Kate Middleton
Catherine in a powder blue Catherine Walker skirt suit in 2016, and her mother-in-law Diana wearing a similar style in 1988. Photos: Getty Images
Queen Elizabeth II
Duchess Kate 10 June 16
Catherine, Duchess of Cambridge attends the launch of Heads Together Campaign at Olympic Park on May 16, 2016 in London, England.
Duchess of Cambridge
Queen Elizabeth II Photos: Queen Elizabeth II at the Royal Cavalry Show Ground
Catherine, Duchess of Cambridge, waves as she leaves after a visit to the Nelson trust women centre in Gloucester, western England on November 4, 2016.