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Who's a big boy then? Royal baby weighs in at a hefty 8lb 6oz
His father William weighed 7lb 1.5oz in 1982, while his grandfather the Prince of Wales weighed 7lb 6oz
The Duke and Duchess of Cambridge's baby son is the heaviest future king to be born in recent history.
The as-yet-unnamed boy weighed 8lb 6oz after being born at 4.24pm at the private Lindo wing of St Mary's Hospital in London.
His father William weighed 7lb 1.5oz in 1982, while his grandfather the Prince of Wales weighed 7lb 6oz after being born in 1948.
The Queen was born by Caesarean section in her maternal grandparents' London home and was also third in line to the throne at the time, but her weight was not announced.
[All the latest news on the royal birth]
The average weight of a baby born close to its due date is around 8lb 2.5oz (3.7 kilos), but Kate was thought to be overdue.
Judith Rowbotham, a social historian at Nottingham Trent University, said the birth weights of previous monarchs were not revealed.
"It's a respectable weight. It's not champion or a 9lb or 10lb, which would be eyebrow-raising and make you think he's been hanging around in his mother's womb for too long," Dr Rowbotham said.
"What it certainly shows is that this is a baby of healthy parents. He's definitely got more weight than his father and grandfather did.
"I doubt we were told the birth weights of previous monarchs. I'm pretty certain we weren't for George V and George VI. That kind of information would have been seen as very private detail.
"Before, it was enough to know that the child was born alive and healthy. After that, the bulletins would go very quiet."
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Prince Harry weighed 6lb 14oz when he was born in 1984. William's cousin Lady Louise Mountbatten-Windsor was born prematurely weighing 4lb 9oz in 2004, while Louise's brother Viscount Severn, arrived in 2007 weighing 6lb 2oz.
The Queen's first great-grandchild Savannah Phillips was just slightly heavier than William and Kate's new baby son and arrived weighing 8lb 8oz in December 2010.
The monarch's second great-grandchild Isla Phillips, born In March last year, weighed 7lb 4oz.
