The Duke and Duchess of Cambridge emerged full of smiles outside St Mary’s Hospital as they proudly showed off their third child to the waiting world.??Just before 6pm on Monday afternoon, Kate Middleton posed on the steps outside the central London hospital where international??media and well-wishers had gathered to celebrate the Royal family’s new arrival.

Wearing a red dress, she held her third child – a son who weighed 8lb??7oz – who could be seen wiggling his fingers. The Royal couple posed for pictures with the Duchess holding her son who was nestled in a white blanket. After waving at the cameras, they re-emerged with the baby Prince in a car seat being carried by his father and as??he left, the duke told reporters he was “very happy, very delighted, thank you”. He added: “Thrice the worry now.”

He assured ??said: “We didn’t keep you waiting too long this time.” And when pressed on any clues for the name, Prince William said: “You’ll find out soon enough.” Kensington Palace tweeted a picture of the couple with the caption: “Welcome to the family.”??Prince George and Princess Charlotte arrived at St??Mary’s Hospital to meet their baby brother for the first time at 4.45pm before being whisked back home via??a back exit.

In a statement, Kensington Palace said: “Their Royal Highnesses would like to thank all staff at the hospital for the care and treatment they have received. The new Prince was born at 11.01am with Prince William alongside the Duchess, who had been taken to hospital having gone into labour at 6am.?? Kensington Palace announced the new prince weighed 8lb 7oz.

The baby is fifth in line to the throne and the Queen and the Duke of Edinburgh’s sixth great-grandchild.