In a big family photo, Kate and William are joined by their children, along with Harry and Meghan, Charles and Camilla, and the Middleton family including Kate’s sister Pippa Matthews and her husband James.
The photographs were taken by Matt Holyoak in the Morning Room at Clarence House (PA)
Members of the royal family appear in another photo without the Middletons.
In the royal family photo, the Cambridge five sit in the morning room at Clarence House, with Louis in Kate’s arms, Princess Charlotte gazing across at her baby brother and Prince George sitting on William’s lap with a wide smile on his face.
Standing behind them are the Prince of Wales and the Duchess of Cornwall, along with the Duke and Duchess of Sussex – with Meghan linking her hand through Harry’s arm.
The Duke and Duchess of Cambridge with Prince Louis, Prince George and Princess Charlotte (PA)
A third photo of the Cambridge family by themselves features Kate smiling down at Louis in her arms, while George stands with one hand in his pocket and Charlotte leans into the trailing christening gown.
A final image shows Kate and Louis in the garden at Clarence House, with the mother-of-three looking down at the bright-eyed royal baby in her arms.
Mr Holyoak said: “I was truly honoured at being asked to take the official photographs at the christening of Prince Louis, and to witness at first hand such a happy event.
“Everyone was so relaxed and in such good spirits, it was an absolute pleasure.”
Kate with baby Louis after his baptism in the Chapel Royal at St. James’s Palace (PA)