The Queen, pictured today, celebrates the birth of her latest great-grandchild with a ride at Windsor Castle
They added: "The Queen, The Duke of Edinburgh, The Prince of Wales, The Duchess of Cornwall, Prince Harry and members of both families have been informed and are delighted with the news."
The Queen today celebrated the birth of her latest great-grandchild with a horse back ride at Windsor Castle.
It's the first time in history that a boy will not precede his older sister in the line of succession, with Princess Charlotte remaining fourth, behind brother George.
Excitement had today reached fever pitch when Kate's stylist was seen leaving the Lindo Wing - sparking speculation that she may have already prepared the royal for the reveal of the fifth-in-line to the throne.