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)
The Duke And Duchess Of Cambridge Depart The Lindo Wing With Their Daughter
Britain's Catherine, Duchess of Cambridge holds her newly-born daughter, her second child with Britain's Prince William, Duke of Cambridge, as they show her to the media outside the Lindo Wing at St Mary's Hospital in central London, on May 2, 2015. The Duchess of Cambridge was safely delivered of a daughter weighing 8lbs 3oz, Kensington Palace announced. The newly-born Princess of Cambridge is fourth in line to the British throne. (STANSALL/AFP/Getty Images)
The Duke And Duchess Of Cambridge Depart The Lindo Wing With Their Daughter
Britain's Prince William, Duke of Cambridge, and his wife Catherine, Duchess of Cambridge show their newly-born daughter, their second child, to the media outside the Lindo Wing at St Mary's Hospital in central London, on May 2, 2015. The Duchess of Cambridge was safely delivered of a daughter weighing 8lbs 3oz, Kensington Palace announced. The newly-born Princess of Cambridge is fourth in line to the British throne. AFP PHOTO / LEON NEAL
The Duke And Duchess Of Cambridge Depart The Lindo Wing With Their Daughter
Britain's Catherine, Duchess of Cambridge holds her newly-born daughter, her second child with Britain's Prince William, Duke of Cambridge, as they show her to the media outside the Lindo Wing at St Mary's Hospital in central London, on May 2, 2015. The Duchess of Cambridge was safely delivered of a daughter weighing 8lbs 3oz, Kensington Palace announced. The newly-born Princess of Cambridge is fourth in line to the British throne. AFP PHOTO / BEN STANSALL
The Duke And Duchess Of Cambridge Depart The Lindo Wing With Their Daughter
LONDON, ENGLAND - MAY 02: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge depart the Lindo Wing with their newborn daughter at St Mary's Hospital on May 2, 2015 in London, England. The Duchess was safely delivered of a daughter at 8:34am this morning, weighing 8lbs 3 oz who will be fourth in line to the throne. (Photo by John Stillwell - WPA Pool/Getty Images)
The Duke And Duchess Of Cambridge Depart The Lindo Wing With Their Daughter
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)
The Duke And Duchess Of Cambridge Depart The Lindo Wing With Their Daughter
LONDON, ENGLAND - MAY 02: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge depart the Lindo Wing with their newborn daughter at St Mary's Hospital on May 2, 2015 in London, England. The Duchess was safely delivered of a daughter at 8:34am this morning, weighing 8lbs 3 oz who will be fourth in line to the throne. (Photo by Chris Jackson/Getty Images)
The Duke And Duchess Of Cambridge Depart The Lindo Wing With Their Daughter
Britain's Prince William, Duke of Cambridge, and his wife Catherine, Duchess of Cambridge show their newly-born daughter, their second child, to the media outside the Lindo Wing at St Mary's Hospital in central London, on May 2, 2015. The Duchess of Cambridge was safely delivered of a daughter weighing 8lbs 3oz, Kensington Palace announced. The newly-born Princess of Cambridge is fourth in line to the British throne. (BEN STANSALL/AFP/Getty Images)
The Duke And Duchess Of Cambridge Depart The Lindo Wing With Their Daughter
LONDON, ENGLAND - MAY 02: Prince William, Duke of Cambridge leaves The Lindo Wing of St Mary's Hospital with his newborn daughter on May 2, 2015 in London, England. (Photo by Ian Gavan/Getty Images)
The Duke And Duchess Of Cambridge Depart The Lindo Wing With Their Daughter
LONDON, ENGLAND - MAY 02: Prince William, Duke of Cambridge leaves The Lindo Wing of St Mary's Hospital with his newborn daughter on May 2, 2015 in London, England. (Photo by Ian Gavan/Getty Images)
The Duke And Duchess Of Cambridge Depart The Lindo Wing With Their Daughter
2LONDON, ENGLAND - MAY 02: Prince William, Duke of Cambridge and Prince George of Cambridge arrive at the Lindo Wing after Catherine, Duchess of Cambridge gave birth to a baby girl at St Mary's Hospital on May 2, 2015 in London, England. The Duchess was safely delivered of a daughter at 8:34am this morning, weighing 8lbs 3 oz who will be fourth in line to the throne. (Photo by Chris Jackson/Getty Images)