July 25, 2013 at 6:35 PM ET
Prince Harry is already smitten with his 4-day-old nephew Prince George.
At the opening of a photography exhibit in London's The Getty Gallery on Thursday, the first-time uncle shared details about his first meeting with the little prince.
"When I saw him he was crying his eyes out like all babies do I suppose, but it's fantastic to have an addition to the family," he said at the event.
"I hope my brother knows how expensive my babysitting charges are," Harry joked.
When asked if William is cut out for fatherhood, his brother gave another cheeky retort in response: "Of course he is. Hopefully most people are, otherwise, why are they having a child?"
As for more details about the newborn, Harry made vague hand gestures describing the size of his young nephew, noting that "he's about that long and about that wide."
And while Prince William swore on Tuesday at the baby's unveiling that his son "got [Kate's] looks, thankfully," Harry wasn't willing to postulate whether young Prince George has any recognizable family characteristics just yet.
"I think you can judge that one yourself, I have no idea," he said.
When it comes to George's first 20 years, Harry vowed to "make sure he has a good upbringing, to keep him out of harm's way, to make sure he has fun," he told the crowd. "The rest of it I will leave to the parents."