LONDON, ENGLAND - MAY 02: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge leave The Lindo Wing of St Mary's Hospital with their newborn daughter on May 2, 2015 in London, England. (Photo by Ian Gavan/Getty Images)
LONDON, ENGLAND - MAY 02: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge leave The Lindo Wing of St Mary's Hospital with their newborn daughter on May 2, 2015 in London, England. (Photo by Ian Gavan/Getty Images)