KING'S LYNN, ENGLAND - DECEMBER 25: Catherine, Duchess of Cambridge attends a Christmas Day church service at Sandringham on December 25, 2015 in King's Lynn, England. (Photo by Chris Jackson/Getty Images)
KING'S LYNN, ENGLAND - DECEMBER 25: Catherine, Duchess of Cambridge attends a Christmas Day church service at Sandringham on December 25, 2015 in King's Lynn, England. (Photo by Chris Jackson/Getty Images)