Prince William & Duchess Kate leave St Marry’s Hospital with new born Son World as the public got its first glimpse of the future King.

Prince William and  Duchess of Cambridge cradled their one-day-old boy in her arms as she and her husband walked out of the Lindo Wing at London’s St Mary’s Hospital.

She then gently passed the fair-haired baby, swaddled in a white blanket, to William.

They walked towards the waiting throngs of world media and the Prince told them jokingly in a relaxed fashion: “He’s got a good pair of lungs on him, that’s for sure.

“He’s a big boy, he’s quite heavy.

William also revealed they had not yet decided what to call their newborn son, saying: “We are still working on a name so we will have that as soon as we can.”

He added: “It’s the first time we have seen him really so we are having a proper chance to catch up.”

The Duchess said: “It’s very emotional, it’s such a special time. I think any parent will know what this feeling feels like.”

Her husband also said it was “very emotional” and ” very special”.

William, wearing a light blue shirt, added: “He’s got her looks, thankfully,” while Kate replied: “No, no, I’m not sure about that.”

His wife, who was wearing her sapphire and diamond engagement ring which was his late mother Diana’s, also said her husband had already changed his first nappy.

After speaking to reporters and waving at the large crowds, the couple then went back inside to put the youngster in a car seat.

Moments later, they came outside for a second time and William placed the one-day-old boy in a waiting Range Rover.

A smiling Prince then got behind the wheel and Kate, who was sitting on the back seat, waved with her son next to her in the baby seat.

The family later return to Kensington Palace. Kate’s sister Pippa had arrived there earlier with her boyfriend.

Royal Baby:The name of the child will not be announced tonight

Meanwhile, the Queen has said she was “thrilled” at the arrival of her great-grandson, according to a guest at a Buckingham Palace reception.

The Royal baby, who will be known as the Prince of Cambridge, was born at 4.24pm on Monday, weighing 8lb 6oz (3.798kg).

William was at his wife’s bedside during her labour. The Duchess spent the night in hospital, as did her husband.

Celebrations have taken place in London to honour the birth of the new Royal arrival.

Guardsmen marked the changing of the guard outside Buckingham Palace by playing ‘Congratulations’ and gun salutes sounded across the capital to mark the special occasion.

The King’s Troop Royal Horse Artillery and the Honourable Artillery Company carried out the ceremonial royal salutes in honour of the new addition to the Royal Family.

This included a 41-gun salute at London’s Green Park and 62 rounds fired at the Tower of London.