KING'S LYNN, ENGLAND - JULY 05: (EDITORS NOTE: This image has been converted to black and white) Catherine, Duchess of Cambridge pushes Princess Charlotte of Cambridge in her pram as Prince William, Duke of Cambridge and Prince George of Cambridge follow as they leave 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)
