As well as giving a surprise interview outside their Windsor home, Meghan Markle and Prince Harry released an official statement saying their royal baby had been born.
It gave details of the birth, an update on Meghan and the couple's families.
The statement is traditional for royal babies, and the Duke and Duchess of Cambridge released similar ones after the births of Prince George, Princess Charlotte and Prince Louis.
But there was one very key difference between the Cambridge and the Sussex statements.
Meghan and Harry gave an update on the family members they had told, including Diana's relatives, and said they were all "delighted with the news".
There was also an update Meghan's mum Doria Ragland, saying she is with the couple at Frogmore Cottage .
While Kate and William vaguely mentioned the Duchess' family in their statement, they weren't named.
They gave details of members of the Royal gang who had been informed, but just said "members of both families" when referring to the Middletons.
Meghan and Harry's statement read: "Her Royal Highness the Duchess of Sussex was safely delivered of a son at 0526hrs.
"The baby weighs 7lb 3oz.
"The Duke of Sussex was present for the birth.
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"The Queen, the Duke of Edinburgh, the Prince of Wales, the Duchess of Cornwall, the Duke and Duchess of Cambridge, Lady Jane Fellowes, Lady Sarah McCorquodale and Earl Spencer have been informed and are delighted with the news.
"The Duchess's mother, Doria Ragland, who is overjoyed by the arrival of her first grandchild, is with their Royal Highnesses at Frogmore Cottage.
"Her Royal Highness and her child are both doing well."
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Kate and William's statement for Prince George said: "Her Royal Highness the Duchess of Cabridge was safely delivered of a son at 4.24pm. The baby weighs 8lbs 6oz.
"The Duke of Ca,bridge was present for the birth.
"The Queen, 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.
"Her Royal Highness and her child are both doing well and will remain in hospital overnight."
