On the historic moment when he and Kate brought George out of St Mary's Hospital in Paddington, central London, for the first time, William said they were "happy to show him off to whoever wanted to see him".
"I think I was on such a high anyway," he said.
"As any new parent knows, you're only too happy to show off your new child and, you know, proclaim that he is the best-looking or the best everything.
"It's nice that people want to see George, so, you know, I'm just glad he wasn't screaming his head off the whole way through."
Prince William said he was "terrified" he would mess up fixing the baby's car seat into the back of the vehicle in front of the world's press and admitted he had practised the manoeuvre.
He said: "I know there's been speculation about that. I had to practise, I really did. I was terrified that I was going to do some ... you know, it was going to fall off or it wasn't going to close properly.
"So, I had actually practised with that seat, but only once before."
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