The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, depart The Lindo Wing with their newborn son at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Chris Jackson/Getty Images)

BRITAIN-ROYALS-BABY

Prince William and Catherine, Duchess of Cambridge show their new-born baby boy to the world's media outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / BEN STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images)

BRITAIN-ROYALS-BABY

Prince William and Catherine, Duchess of Cambridge show their new-born baby boy to the world's media outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / JUSTIN TALLIS (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)

BRITAIN-ROYALS-BABY

Prince William drives his wife, Catherine, Duchess of Cambridge and their new-born baby boy away from the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 24: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, depart The Lindo Wing with their newborn son at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge.  (Photo by Peter Macdiarmid/Getty Images)

BRITAIN-ROYALS-BABY

The safe hands of Catherine, Duchess of Cambridge hold her new-born baby boy in fron to the world's media outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge depart The Lindo Wing with their newborn son at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Chris Jackson/Getty Images)

BRITAIN-ROYALS-BABY

Prince William and Catherine, Duchess of Cambridge' new-born baby boy seen in a car seat outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/Getty Images)

BRITAIN-ROYALS-BABY

Prince William the Duke of Cambridge holds his new-born baby boy in front of the world's media outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / POOL / John Stillwell (Photo credit should read JOHN STILLWELL/AFP/Getty Images)

BRITAIN-ROYALS-BABY

Prince William the Duke of Cambridge holds his new-born baby boy in front of the world's media outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / POOL / John Stillwell (Photo credit should read JOHN STILLWELL/AFP/Getty Images)

BRITAIN-ROYALS-BABY

Catherine, the Duchess of Cambridge (L) looks on as Prince William the Duke of Cambridge holds his new-born baby boy in front of the world's media outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / POOL / John Stillwell (Photo credit should read JOHN STILLWELL/AFP/Getty Images)

BRITAIN-ROYALS-BABY

William the Duke of Cambridge holds his new-born baby boy in front of the world's media outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / POOL / John Stillwell (Photo credit should read JOHN STILLWELL/AFP/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge leaves the Lindo Wing of St Mary's Hospital with his newborn son on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Oli Scarff/Getty Images)

BRITAIN-ROYALS-BABY

William the Duke of Cambridge holds his new-born baby boy in front of the world's media outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / POOL / John Stillwell (Photo credit should read JOHN STILLWELL/AFP/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge leave the Lindo Wing of St Mary's Hospital with their newborn son on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Oli Scarff/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge leave the Lindo Wing of St Mary's Hospital with their newborn son on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Oli Scarff/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge leave the Lindo Wing of St Mary's Hospital with their newborn son on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Oli Scarff/Getty Images)

The Duke And Duchess Of Cambridge Announce The Birth Of A Baby Boy

LONDON, ENGLAND - JULY 23: Prince Charles, Prince of Wales departs The Lindo Wing after visiting Catherine, Duchess Of Cambridge and her newborn son at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 81b 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Oli Scarff/Getty Images)

The Duchess Of Cambridge Has Given Birth To A Baby Boy/Girl

LONDON, UNITED KINGDOM - JULY 23: Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall leave The Lindo Wing after visiting The Duke and Duchess Of Cambridge and their newborn son at St Mary's Hospital on July 23, in London, England.The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 81b 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Chris Jackson/Getty Images)

BRITAIN-ROYALS-BABY

Prince Charles (L) and his wife Camilla, Duchess of Cornwall, arrive at the St Mary's Hospital in London, on July 23, 2013. Britain's Prince William and his wife Kate on Tuesday thanked staff at the hospital where their baby son was born, as the world waited for a name and hopefully a glimpse of the future king. AFP PHOTO / BEN STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images)

BRITAIN-ROYALS-BABY

Prince Charles (L) and his wife Camilla, Duchess of Cornwall, arrive at the St Mary's Hospital in London, on July 23, 2013. Britain's Prince William and his wife Kate on Tuesday thanked staff at the hospital where their baby son was born, as the world waited for a name and hopefully a glimpse of the future king. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)

BRITAIN-ROYALS-BABY

Prince Charles gestures as he arrives at the St Mary's Hospital in London, on July 23, 2013. Britain's Prince William and his wife Kate on Tuesday thanked staff at the hospital where their baby son was born, as the world waited for a name and hopefully a glimpse of the future king. AFP PHOTO / JUSTIN TALLIS (Photo credit should read JUSTIN TALLIS/AFP/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, depart The Lindo Wing with their newborn son at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Oli Scarff/Getty Images)

BRITAIN-ROYALS-BABY

Prince William and Catherine, Duchess of Cambridge show their new-born baby boy to the world's media, on the steps outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)

BRITAIN-ROYALS-BABY

Prince William and Catherine, Duchess of Cambridge show their new-born baby boy to the world's media, on the steps outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / BEN STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, depart The Lindo Wing with their newborn son at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Oli Scarff/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, depart The Lindo Wing with their newborn son at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Chris Jackson/Getty Images)

BRITAIN-ROYALS-BABY

Prince William and Catherine, Duchess of Cambridge show their new-born baby boy to the world's media outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)

BRITAIN-ROYALS-BABY

Prince William and Catherine, Duchess of Cambridge's new-born baby boy is introduced to the world's media outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Catherine, Duchess of Cambridge departs The Lindo Wing with her newborn son at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Oli Scarff/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and his newborn son depart The Lindo Wing at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Oli Scarff/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge depart The Lindo Wing with their newborn son at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Chris Jackson/Getty Images)

BRITAIN-ROYALS-BABY

Prince William and Catherine, Duchess of Cambridge show their new-born baby boy to the world's media, standing on the steps outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / BEN STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images)

BRITAIN-ROYALS-BABY

Prince William (R) takes the baby from Catherine, Duchess of Cambridge as they show their new-born baby boy to the world's media outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / BEN STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, depart The Lindo Wing with their newborn son at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Scott Heavey/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge depart The Lindo Wing with their newborn son at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Peter Macdiarmid/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge hold their newborn son outside The Lindo Wing at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge.  (Photo by Peter Macdiarmid/Getty Images)

BRITAIN-ROYALS-BABY

The safe hands of the Duchess of Cambridge hold her son outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / POOL / John Stillwell (Photo credit should read JOHN STILLWELL/AFP/Getty Images)

BRITAIN-ROYALS-BABY

Prince William and Catherine, Duchess of Cambridge show their new-born baby boy to the world's media outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, depart The Lindo Wing with their newborn son at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Chris Jackson/Getty Images)

BRITAIN-ROYALS-BABY

Prince William the Duke of Cambridge shows his new-born baby boy outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, depart The Lindo Wing with their newborn son at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Scott Heavey/Getty Images)

BRITAIN-ROYALS-BABY

Prince William and Catherine, Duchess of Cambridge show their new-born baby boy to the world's media, standing on the steps outside the Lindo Wing of St Mary's Hospital in London on July 23, 2013. The baby was born on Monday afternoon weighing eight pounds six ounces (3.8 kilogrammes). The baby, titled His Royal Highness, Prince (name) of Cambridge, is directly in line to inherit the throne after Charles, Queen Elizabeth II's eldest son and heir, and his eldest son William. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Crowds of well wishers take photographs as Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, depart The Lindo Wing with their newborn son at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge.  (Photo by Peter Macdiarmid/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Crowds of well wishers take photographs as Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, depart The Lindo Wing with their newborn son at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge.  (Photo by Peter Macdiarmid/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, depart The Lindo Wing with their newborn son at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Scott Heavey/Getty Images)

The Duke And Duchess Of Cambridge Leave The Lindo Wing With Their Newborn Son

LONDON, ENGLAND - JULY 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, depart The Lindo Wing with their newborn son at St Mary's Hospital on July 23, 2013 in London, England. The Duchess of Cambridge yesterday gave birth to a boy at 16.24 BST and weighing 8lb 6oz, with Prince William at her side. The baby, as yet unnamed, is third in line to the throne and becomes the Prince of Cambridge. (Photo by Scott Heavey/Getty Images)