"Every father and parent will say your baby is absolutely unbelievable but this little thing is absolutely to die for".
Bookmakers have James, Alexander, Albert, Philip, and Arthur as the favorite names, although other suggestions include Spencer, which was the surname of Harry's late mother Princess Diana.
When quiestion about his new nephew, William said: "I'm very pleased and glad to welcome my brother to the sleep deprivation society that is parenting". An official announcement of the birth was placed outside Buckingham Palace that afternoon.
He added: "It's been the most awesome experience I could have possibly imagined", before adding "how any woman does what they do is beyond comprehension".
Harry and Meghan have been known to buck tradition in favour of a more modern approach to their marriage and family so it remains to be seen to what extent they'll follow royal customs when it comes to their son's upbringing.
More details about Harry and Meghan's first child - such as the name and photos of the newborn - are expected in the coming days. "So I don't know the baby's name or the baby's gender, but this baby will have enough books to last a lifetime".More news: Amber Alert for 5-year-old girl, allegedly abducted by 3 men
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"How any woman can do what they do is beyond comprehension", he said. "But this little thing is absolutely to-die-for so I'm absolutely over the moon".
While William spoke out about Baby Sussex on camera for the first time May 7, he and Kate actually released a written statement about the exciting baby news one day prior. Silverstein's evocative short story has maintained its cult-classic status for over half a century, so it's no wonder that Meghan Markle is making room for the book on her baby's home library.
"The ones that are really taking over and doing most of the work now are Charles's family", royal biographer Penny Junor told AFP.
Kate said as she and husband William visited the Cutty Sark in Greenwich, south-east London: 'It's such a special time.
The prince said the couple were still thinking about names.