The Duke and Duchess of Cambridge have left the hospital after the arrival of their third child, a boy.
The couple’s second son Louis Arthur Charles who was born at 11:01 BST, weighing 8lb 7oz, is fifth in line to the throne.
Prince George and Princess Charlotte had visited their brother at the Lindo Wing of St Mary’s Hospital, London.
Leaving the hospital Prince William said the couple were very happy, before holding up three fingers and joking he had “thrice the worry now”.
“We didn’t keep you waiting too long this time,” he added.
When someone asked him whether the couple had decided on a name, he said: “You’ll find out soon enough.”
Duke and Duchess of Cambridge with new baby boy © Tim Rooke
Minutes earlier, Prince William and Catherine had come out of the hospital briefly to greet the crowds with their new son.
They then returned inside to put their newborn son in his car seat before driving away towards their home Kensington Palace.
Duchess of Cambridge gave birth to baby boy Louis Arthur Charles. Photo PA
The duchess wore a red Jenny Packham dress with a white collar as she left the hospital.
Fashion commentators said that its colours reflected St George’s flag, while others saw echoes of Princess Diana, who wore red and white when she left hospital with a newborn Prince Harry in 1984.
Members of both families have said they are “delighted with the news” of the birth.
Kensington Palace said the name of the baby would be announced in due course while a formal notice of the birth had been posted on the forecourt of Buckingham Palace.
Favourite names at the bookmakers include Arthur, Albert, Frederick, James and Philip.
Prime Minister Theresa May tweeted her “warmest congratulations” to William and Catherine.
She said: “I wish them great happiness for the future.”
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