WINDSOR, ENGLAND - JUNE 13: Catherine, Duchess of Cambridge and Camilla, Duchess of Cornwall chat with guests after the Order of the Garter Service at Windsor Castle on June 13, 2016 in Windsor, England. Today the traditional Garter parade was cancelled in favour of dignitaries arriving in cars due to the inclement weather. (Photo by Chris Jackson/Getty Images)

WINDSOR, ENGLAND - JUNE 13: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge depart the Order of the Garter Service at Windsor Castle on June 13, 2016 in Windsor, England. Today the traditional Garter parade was cancelled in favour of dignitaries arriving in cars due to the inclement weather. (Photo by Chris Jackson/Getty Images)

WINDSOR, ENGLAND - JUNE 13: Catherine, Duchess of Cambridge chats with guests after the Order of the Garter Service at Windsor Castle on June 13, 2016 in Windsor, England. Today the traditional Garter parade was cancelled in favour of dignitaries arriving in cars due to the inclement weather. (Photo by Chris Jackson/Getty Images)

WINDSOR, ENGLAND - JUNE 13: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge depart the Order of the Garter Service at Windsor Castle on June 13, 2016 in Windsor, England. Today the traditional Garter parade was cancelled in favour of dignitaries arriving in cars due to the inclement weather. (Photo by Chris Jackson/Getty Images)

WINDSOR, ENGLAND - JUNE 13: Catherine, Duchess of Cambridge chats with guests after the Order of the Garter Service at Windsor Castle on June 13, 2016 in Windsor, England. Today the traditional Garter parade was cancelled in favour of dignitaries arriving in cars due to the inclement weather. (Photo by Chris Jackson/Getty Images)

WINDSOR, ENGLAND - JUNE 13: Catherine, Duchess of Cambridge chats with guests after the Order of the Garter Service at Windsor Castle on June 13, 2016 in Windsor, England. Today the traditional Garter parade was cancelled in favour of dignitaries arriving in cars due to the inclement weather. (Photo by Chris Jackson/Getty Images)

WINDSOR, ENGLAND - JUNE 13: Camilla, Duchess of Cornwall leaves the Order of the Garter Service at Windsor Castle on June 13, 2016 in Windsor, England. Today the traditional Garter parade was cancelled in favour of dignitaries arriving in cars due to the inclement weather. (Photo by Chris Jackson/Getty Images)

WINDSOR, ENGLAND - JUNE 13: Catherine, Duchess of Cambridge and Camilla, Duchess of Cornwall chat with guests after the Order of the Garter Service at Windsor Castle on June 13, 2016 in Windsor, England. Today the traditional Garter parade was cancelled in favour of dignitaries arriving in cars due to the inclement weather. (Photo by Chris Jackson/Getty Images)