Will and Kate's baby will be Cambridge's first prince — or princess

Britain's Prince William and Kate, Duchess of Cambridge,arrive for a service to celebrate the 60th anniversary of the coronation of Britain's Queen El... Alastair Grant / AP
The first child of the Duke and Duchess of Cambridge will be born with the title of prince or princess.

The next royal baby in England has yet to be born, but already has been bestowed the title of prince or princess, according to Buckingham Palace officials.

The firstborn child of the Duke and Duchess of Cambridge will get a newly created title upon its arrival. The baby will be known as His or Her Royal Highness, Prince or Princess of Cambridge.

The infant will be third in line to the British throne, after Prince William and his father, Prince Charles.

Neither the Duke nor Duchess claim to know the gender of their child, who is expected to arrive within days. Earlier this year, however, Queen Elizabeth took steps to update a century-old rule to make it easier to grant the child the title “princess” if she is a girl. Otherwise, a daughter would have only been allowed to receive the title, “lady.”

The baby will be delivered at St. Mary’s hospital, the same London facility where William and his brother, Prince Harry, were born.

  • Slideshow Photos

    Princess Diana: Fashionable and pregnant

    The Princess of Wales was known for her sense of style and that didn’t change during her pregnancies. From William to Harry, Princess Diana continued wearing stunning looks while sporting her baby bumps.

  • Princess Diana: Fashionable and pregnant

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    How Princess Diana made pregnancy stylish -

    There have been many comparisons made between Princess Diana and Duchess Kate, including their fashion sense. From these photos, it's clear the Princess of Wales did not lose her sense of style during her pregnancies with her two sons. We'll just have to wait and see if the Duchess of Cambridge does the same!

    First baby announcement

    On the day she announced she was pregnant with her first child (who grew up to be Prince William), the Princess of Wales wore a coat by Bellville Sassoon and hat by John Boyd.

    AP
  • Princess Diana: Fashionable and pregnant

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    Pregnant and pretty -

    While pregnant with William, the Princess of Wales visited the Scilly Isles wearing a maternity gown by famed designer Catherine Walker.

    AP
  • Princess Diana: Fashionable and pregnant

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    Classy with Catherine Walker -

    Princess Diana at the Guards Polo Club in Windsor wearing a maternity dress by Catherine Walker during her first pregnancy.

    AP
  • Princess Diana: Fashionable and pregnant

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    Chic for the ceremony -

    On the balcony of Buckingham Palace with the queen and other members of the royal family, Princess Diana, pregnant with her first son, stands out in her green gown for the Trooping of the Colour.

    AP
  • Princess Diana: Fashionable and pregnant

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    Trendy twosome -

    Princess Diana walks with Sarah Ferguson at Windsor Polo while pregnant with Prince William.

    WireImage
  • Princess Diana: Fashionable and pregnant

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    Gorgeous gown -

    Little more than a month after Prince William's birth, Princess Diana attended a service of commemoration for the Falklands War. She was still wearing maternity clothes, but who can tell?

    Tim Graham / Getty Images
  • Princess Diana: Fashionable and pregnant

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    Stepping out in style -

    Arriving for a movie premiere in London, Princess Diana looked stunning in a gown by Catherine Walker while pregnant with her second son, Harry.

    AP
  • Princess Diana: Fashionable and pregnant

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    Striking style strikes twice -

    In the left photo, Princess Diana wears a maternity dress with the Spencer family tiara, royal family orders and a diamond necklace in the shape of the Prince of Wales feathers during her second pregnancy. She originally wore the dress while pregnant with William in 1982, as pictured on the right.

    Getty Images, AP
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