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It’s a Princeling! Kate and Will Welcome a Baby Boy

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Prince William and Kate Middleton (Getty Images)

We can't call her Waitey Katie any more.

Kate Middleton, the Duchess of Cambridge, "safely delivered" a baby boy Monday at 4:24 p.m. London time. The princely spawn — who henceworth will be known as Baby Cambridge until his name is officially announced — tipped the scales at 8 pounds, 6 ounces.

Prince William was by his wife's side during the 10-hour-plus "natural labor" at St. Mary's Hospital. This is the first child for Kate, 31, and William, 31, and the third in line to the throne.

"We could not be happier," said the prince in a statement.

Kensington Palace also issued a statement regarding the birth. "Her Royal Highness and her child are both doing well and will remain in hospital overnight," said Kensington Palace in an official statement.

"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."

As for the baby name, it "will be announced in due course."

Proud grandpa Prince Charles released his own special message following the big news, saying, "Both my wife and I are overjoyed at the arrival of my first grandchild. It is an incredibly special moment for William and Catherine and we are so thrilled for them on the birth of their baby boy.

[Related: Royal Babies Around the World (Photos)]

"Grandparenthood is a unique moment in anyone's life, as countless kind people have told me in recent months, so I am enormously proud and happy to be a grandfather for the first time and we are eagerly looking forward to seeing the baby in the near future."

Per tradition, the official framed notification of the birth was placed on a gilded easel in front of Buckingham Palace — the same way William's birth was broadcast to the world three decades ago.

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The weight and gender of the royal baby was announced on a sheet of paper displayed outside Buckingham Palace on …

It's been an exciting day for royal watchers. Kensington Palace announced to the world media at 11:30 p.m. PT Sunday night — that's 7:30 a.m. Monday morning in London — that Middleton was headed to the hospital in the early stages of labor.

[Related: All Your Will & Kate Royal Baby Questions Answered!]

"The duchess traveled by car from Kensington Palace to the Lindo Wing at St. Mary's Hospital with The Duke of Cambridge," Clarence House tweeted.

While Kate gave birth to a healthy baby boy, she had a rough start to her pregnancy.

After confirming Kate Middleton was pregnant on December 3, 2012, she was admitted to King Edward VII Hospital in Central London with hyperemesis gravidarum, or acute morning sickness.

Middleton kept her exact due date a secret, simply stating it was mid-July (her last official appearance was on the balcony of Buckingham Palace during a June 15 ceremony). Media started setting up outside St. Mary's Hospital on July 1 in preparation for the Duchess of Cambridge to give birth. The Great Kate Wait continued for over three weeks.

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