PRINCE William and Kate Middleton proudly showed the world their baby son, a future British king, before taking him home tonight.
William and Kate began their new lives as parents, cradling their baby prince and posing for pictures on the steps of the Lindo Wing of St Mary's Hospital in London.
The Duchess held her son first and the couple looked relaxed and smiled broadly as the world's media captured the moment.
William later held his son and walked forward with his wife to answer a few questions. He began by joking: "He's got a good pair of lungs on him, that's for sure. He's a big boy, he's quite heavy. 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, who still had a bump under her summer dress, said: "It's very emotional, it's such a special time. I think any parent will know what this feeling feels like."
Her husband agreed: "It's very special."
He added: "I'll remind him of his tardiness when he's a bit older. I know how long you've all been standing here so hopefully the hospital and you guys can all go back to normal now and we can go and look after him."
Meanwhile, the British queen is "thrilled" at the arrival of her first great-grandson, she told a guest at a Buckingham Palace reception.
Louise Butt said the monarch told her the Duke and Duchess of Cambridge's son, born yesterday, was a "big boy" and that "the first born is very special".
The Queen made the remark during an event for representatives of companies who have been given the Queen's Award for Enterprise.
Mrs Butt, of Bath-based science marketing firm Select Science, said: "She (the Queen) said she is thrilled and she said he is a big boy.
"She said the first born is very special. We agreed."
This morning that Kate Middleton’s personal hair stylist attended the hospital in preparation for her departure.
The parents of the Duchess of Cambridge arrived at the hospital earlier this afternoon to visit their grandson.
Carole Middleton said the Duke and Duchess of Cambridge's baby was "absolutely beautiful", adding: "They're both doing really well, we're so thrilled."
Heir to the throne Prince Charles arrived just before 5.30 this evening, accompanied by wife Camilla, to visit his new grandson.
Prince William spent last night at the hospital with Kate and his new son, although he slept in a different room to the pair.
The couple’s son was delivered at 4.24pm yesterday in the private Lindo Wing of St Mary’s Hospital in Paddington weighing a bouncing 8lbs 6oz and with his proud father looking on.
On his birth, he immediately becomes third in line to the throne, behind his father William and grandfather Charles.