KING'S LYNN, ENGLAND - JULY 05:  Catherine, Duchess of Cambridge and Princess Charlotte of Cambridge arrive at the Church of St Mary Magdalene on the Sandringham Estate for the Christening of Princess Charlotte of Cambridge on July 5, 2015 in King's Lynn, England.  (Photo by Chris Jackson/Getty Images)
KING'S LYNN, ENGLAND - JULY 05:  Catherine, Duchess of Cambridge and Princess Charlotte of Cambridge arrive at the Church of St Mary Magdalene on the Sandringham Estate for the Christening of Princess Charlotte of Cambridge on July 5, 2015 in King's Lynn, England.  (Photo by Chris Jackson - WPA Pool/Getty Images)
KING'S LYNN, ENGLAND - JULY 05:  Princess Charlotte of Cambridge is pushed in her silver cross pram as she leavesthe Church of St Mary Magdalene on the Sandringham Estate for the Christening of Princess Charlotte of Cambridge on July 5, 2015 in King's Lynn, England.  (Photo by Chris Jackson/Getty Images)
KING'S LYNN, ENGLAND - JULY 05:  Prince George of Cambridge leaves the Church of St Mary Magdalene on the Sandringham Estate for the Christening of Princess Charlotte of Cambridge on July 5, 2015 in King's Lynn, England.  (Photo by Chris Jackson/Getty Images)
KING'S LYNN, ENGLAND - JULY 05:  Queen Elizabeth II, Prince Phillip, Duke of Cambridge, Camilla, Duchess of Cornwall,Catherine, Duchess of Cambridge, Prince William, Duke of Cambridge, Princess Charlotte of Cambridge and Prince George of Cambridge arrive at the Church of St Mary Magdalene on the Sandringham Estate for the Christening of Princess Charlotte of Cambridge on July 5, 2015 in King's Lynn, England. (Photo by Matt Dunham - WPA Pool /Getty Images)