LONDON, ENGLAND - MAY 02: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge leave hospital with their new baby daughter at St Mary's Hospital on May 2, 2015 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - MAY 02: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge leave hospital with their new baby daughter at St Mary's Hospital on May 2, 2015 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)