The portraits taken in the Morning Room at Clarence House include an historic photograph showing the Queen beside her three male heirs - more than 100 years since anything similar was published.
The last time was in 1894 at the christening of Edward VIII, where the future King was cradled by Queen Victoria.
But our favourite is of three-month-old George, wide awake, bouncing on his mother's knee with his arms held high as he performs for the camera in his flowing christening gown.
The Middleton family feature in one of the photos, taken by British photographer Jason Bell, with Auntie Pippa standing between Prince Harry and her brother James Middleton.
Pippa, 30, brother James, 26, and parents Carole, 58, and Michael, 64, beamed as they joined the royals.
They stood shoulder to shoulder with William's dad Charles, 64, brother Harry, 29, stepmother Camilla, 66, and grandparents 92-year-old Prince Philip and the Queen – two families from completely different backgrounds united by one special little boy.
And what a good boy! At her latest public engagement, Kate revealed there was relief all around that gorgeous George was on his best behaviour during his first public appearance since he was a day old.
"He was such a good boy actually, we're very lucky," she told one guest at the charity event.
"He's not always like that but I think he enjoys all the different people and I think there was lots of action going on. He gets ... slightly distracted."
Royal photographer Ian Jones commented: "These are a beautiful set of photographs. Very well shot in difficult circumstances very quickly.
"You have here key moments such as Prince William holding Prince George in a modern twist.
"There is also a lovely photo of the three of them together - great smiles and lovely laughter."