The Duchess of Cornwall with Des Turner the Punch and Judy man at the Whitstable Oyster Festival in Kent.
The Prince of Wales has given his new grandson's name the Royal seal of approval, describing George as a "very good name" but adding that he'll be called "Georgie in no time".
The Prince and The Duchess of Cornwall were congratulated on the new arrival by throngs of wellwishers at the Whitstable Oyster Festival in Kent - a week on from the birth of Prince George of Cambridge.
The couple were showered with gifts for Prince George including a tiny lemon t-shirt which The Prince can pass on to the baby as a souvenir from his trip to the festival.
Shona Corcoran, 38, from Whitstable, said she and her three-year-old daughter Hannah felt that they should bring a gift for the baby prince and the perfect opportunity presented itself today as they passed it on to His Royal Highness.
"It's one of the Whitstable Oyster Festival t-shirts and we just wanted to give something to George. "He said, 'Oh, that's fantastic, thank you. I'm sure he'll like to wear that'," she said.
The Prince met a woman who also has a grandchild called George. Margaret Quinney, 67, said: "He was talking about the grandchildren.
"He said there are lots of grandparents around." It was after The Prince met Mrs Quinney and her daughter Jo that he said: "George - a very good name."
Sonia Rule, 38, whose partner works for the Whitstable RNLI Lifeboats crew said she heard The Prince joke that his grandson will "be known as Georgie in no time".
Their Royal Highnesses met local fishermen during their visit to the week-long festival which dates back to Norman times.
While The Prince tried two oysters, his wife declined, saying: "I love them but I ate a bad one once." The Prince joked with photographers who were keen to get a snap of him eating the local delicacy, having missed him eat his first.
"I've just tried one!" He said. Adding: "Now are you sure you're going to get this?" Natalie Adams, 38, who was among a group of mothers and babies enjoying the sunshine at the harbour, said The Prince also joked with her about having eaten the two oysters.
"He said 'what I do for Whitstable. They are an acquired taste'," she said. Ms Adams, a member of the yacht club, said: "It's a lovely community in Whitstable.
"Friends all supporting friends."
At the beginning of their visit, the couple joined local community samba band Samba Pelo Mar on stage where they helped drum to the beat of a carnival-themed tune.
As Their Royal Highnesses approached their car to leave, crowds called out: "Thanks for coming!"
The Prince of Wales sits on a sofa with Jamal Edwards during a live session at the launch of The Prince's Trust Summer Sessions at The Princes's Trust in Historic Chatham Dockyard in Chatham, Kent.
The couple also made a visit to the Chatham Historic Dockyard where they were presented with a garden swing "made to last" for Prince George.
Presenting them with the gift, Admiral Sir Ian Garnett said: "We of course share your pride in the birth of your first grandchild."
The swing was made in the dockyard with timber salvaged from HMS Gannet and rope made on the site.
Sir Ian said: "Like everything in the dockyard it was made to last."
Speaking after the Their Royal Highnesses' departure, he added: "We were really pleased and terribly proud that after what must have been a terribly busy and hot summer season that he came down to see us."
The Prince and Duchess carried out most of their engagement at the dockyard separately, with The Duchess meeting a group of children dressed as pirates.
Dancing and singing, the children played underneath a banner which said: "We hope that Prince George will visit us soon!"
The Duchess was also shown around an exhibition about Antarctica. Before ending their day of engagements at Chatham Historic Dockyard, The Prince and Duchess visited The Prince's Trust Centre in the town.
They met unemployed young people who are receiving support through the youth charity's Fairbridge programme.
The programme provides help for disadvantaged young people by giving them skills and the confidence to change their lives for the better.
Jamal Edwards, a 22-year-old entrepreneur behind the youth broadcaster SB.TV, kicked off a new Prince's Trust campaign today. The Prince's Trust Summer Sessions are a series of events to inspire young people who are worried about their exam results, struggling to find a job or feeling hopeless about the future.
Mr Edwards shared his secrets of success with young people present, tweeting the session live to include other young people across the UK.
He said: "There is a big crowd of school leavers out there worrying about what the future holds for them; I know because it wasn't all that long ago that I was one of them.
"But what I would say to every one of them is you can do whatever you want; you can make your own future if you want it enough.
"If you don't know what your next steps are, The Prince's Trust is helping young people like you every day to get their lives on track. Give them a call."