Royal Baby: Nets Show Kate Middleton, Prince William, Newborn Leaving Hospital

Kate Middleton and Prince William.

UPDATED: The still-nameless baby boy, the royal couple's first child, was born Monday, with the global media waiting to get a brief glimpse of him late Tuesday.

LONDON – U.K. networks and U.S. news networks showed live video from St. Mary's Hospital here Tuesday night London time as Kate Middleton, Prince William and their baby left the hospital. The baby boy, the royal couple's first child, was born Monday afternoon.

In the U.S., NBC News was among the networks showing live coverage of their first public appearance as a family. In the U.K., Channel 4 and ITV broke into live coverage around 7 p.m. Sky News and BBC News were on the baby news most of the day.

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The royal couple and their baby, whose name is still not known, left after Prince Charles and Camilla Parker Bowles had stopped by the hospital for a visit. On his way out around 6 p.m. local time, Prince Charles signaled to the media that the couple may leave soon thereafter.

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Prince William, wearing a blue shirt, told the media that "we're still working on a name." He added that the couple hoped to have one to share "as soon as we can," but was still getting to know the baby. Said Prince William: "It’s the first time we’ve seen him really, so we’re having a proper chance to catch up."

He also quipped that the baby has got "way more hair than me" and "thankfully" had Middleton's looks. Middleton chimed in saying: "No, no, I'm not sure about that."

"He's a big boy, he's quite heavy," the prince also said before adding: "He's got a good pair of lungs, that's for sure." Prince William and Middleton also joked about the baby boy having gone through his first diaper.

Middleton, who also made some comments that were nearly drowned out by the noise and cheers of people waiting outside, carried the baby as the couple stepped out of the hospital. She then handed the boy to her husband. The parents seemed relaxed and happy.

"It's very emotional, it's such a special time," said Middleton, who was wearing a light-blue dress with polka dots. "I think any parent will know what this feeling feels like."

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Prince William also quipped in his exchange with media representatives who have been waiting for the baby's arrival: "I'll remind him of his tardiness when he is 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."

The global media pack had been waiting for the chance to see the royal family leave the hospital and get a first glimpse of the baby boy.

Shortly after 6 p.m., Kensington Palace said that Middleton would be "discharged this evening" from the West London hospital. No timing was detailed. "The Duke and Duchess of Cambridge and their son will travel home to Kensington Palace," the statement said.

Royals watchers had joined the world's media outside the hospital amid increasing expectation that Middleton would leave by the early evening.

The royal couple left for their residence at Kensington Gardens in a Range Rover, with Prince William driving. Middleton sat on the back seat waving, with her son next to her in a baby seat.

Twitter: @georgszalai