London - Prince William and his wife Kate emerged from her London hospital on Tuesday and presented their newborn son, a future British king, to the world's media.
Kate, wearing a blue dress, was holding the boy first before passing him to her husband.
"He's got a good pair of lungs on him, that's for sure," William told the press, while Kate said the couple was "very emotional" after welcoming their first child, a new third in line to the British throne.
"It's a special time," Kate said. "I think any new parent would know what this feeling feels like."The unnamed baby raised a tiny hand above his white blankets.
William said the baby was "a big boy, he's quite heavy", and joked: "He's got her looks, thankfully."
The couple were "still working on a name", he added.
After speaking briefly to the press, William and Kate returned to the hospital before re-emerging minutes later with their son in a car seat.
William secured the seat in the back of a black Range Rover parked outside the hospital, before driving his family back to their home at Kensington Palace.