The Duke of Cambridge revealed he is 'absolutely thrilled' for the Duke and Duchess of Sussex following the birth of their son yesterday.
William, 36, shared his excitement on his nephew's arrival as he joined Kate, 37, to launch the inaugural King's Cup Regatta at the Cutty Sark, in south-east London today.
The proud uncle told well-wishers he is 'looking forward' to meeting his nephew 'in the next few days' once 'things have quietened down'.
He added jokingly: 'I'm very pleased and glad to welcome my own brother into the sleep deprivation society that is parenting.'
Kate, who looked chic in a nautical-inspired outfit for the outing, shared her husband's delight, saying: '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.'
The couple also revealed they do not yet know the baby's name. Read more from The Daily Mail.