Duke and Duchess of Cambridge are thrilled about Baby Sussex as they attend event in London
The Queen, Prince of Wales and Prince William and Kate shared their delight at the arrival of baby Sussex, with Prince William welcoming Prince Harry into the "sleep deprivation society".
The Queen, alongside the Duke of Edinburgh in a rare public appearance at Windsor Castle, was the first to comment on Tuesday as she was asked by members of the Order of Merit at a luncheon.
"Life is good for Your Majesty?" she was asked.
The Queen replied: "Yes, thank you"
"Congratulations. Another great-grandchild!" she was told.
The Queen replied happily: "Yes, I know."
She was then asked: "How many of them have you got now?" She replied: "Eight".
Prince Charles, accompanied by his wife Camilla on official engagement in Berlin, said: "We couldn't be more delighted at the news and we're looking forward to meeting the baby when we return."
Prince William, speaking outside the Cutty Sark in Greenwich, south-east London, said: "Obviously thrilled, absolutely thrilled, and obviously looking forward to seeing them in the next few days when things have quietened down."
"I'm very pleased and glad to welcome my own brother into the sleep deprivation society that is parenting."
Asked if he had any advice for Harry, as a father-of-three, William laughed and said: "Plenty of advice, plenty of advice, but no - I wish him all the best and I hope [in] the next few days they can settle down and enjoy having a newborn in their family and the joys that come with that."
Kate added: "It's such a special time. Obviously with Louis and Charlotte just having had their birthdays, it's such a great time of year to have a baby, spring is in the air.
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"As William said, we're looking forward to meeting him and finding out what his name's going to be, so it's really exciting for both of them and we wish them all the best.
"These next few weeks are always a bit daunting the first time round so we wish them all the best."
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Evening Standard