And he joked: “He’s got her looks, thankfully, and way more hair than me.
“He’s got a good pair of lungs on him, that’s for sure!”
The elated new dad held on to his son as he admitted he and Princess Kate had still not chosen a name for the third in line to the throne.
And Prince Wills, 31, proved he will be a great dad, as Kate said: “He’s done his first nappy already.”
William said: “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.
“It’s the first time we have seen him really, so we are having a proper chance to catch up.”
Wills and Kate, both 31, greeted well-wishers outside the Lindo Wing of St Mary’s Hospital, Paddington, as applause erupted.
The Duchess Of Cambridge, still showing a bump under her blue summer dress, said she was overwhelmed at becoming a mum.
She looked a little tearful as she said: “It’s very emotional, it’s such a special time. I think any parent will know what this feeling is like.”
Her husband agreed, adding: “It’s very special.
“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.”
Kate appeared at 7.14pm, carrying the baby in a white blanket.
As she clutched the 8lb 6oz boy, the first Prince Of Cambridge to be born for more than 190 years, his hand appeared over the top of the cover, making it look as if he was waving to the crowds.