The photos were taken at Clarence House, the official London residence of Prince Louis' grandparents, Prince Charles and Camilla, Duchess of Cornwall.
Prince William and Catherine have marked their youngest son Prince Louis' christening with a series of intimate and natural photos with their closest family members.
Among the notable royal attendees were Louis' proud grandfather Prince Charles, his wife Duchess Camilla, uncle and aunt Prince Harry and Meghan Markle, and his brother and sister George and Charlotte.
Kensington Palace has released family photos of Prince Louis in the arms of his mother, the Duchess of Cambridge, to mark the baby boy's christening.
The official photos from Prince Louis of Cambridge's christening have been released one week on from the event.
It's Meghan's second time ever appearing in a royal family portrait and first for a christening one.
The Archbishop of Canterbury, Justin Welby lead the service with support from the Dean of The Chapel Royal, The Right Reverend and Right Honourable the Lord Chartres, and The Sub-Dean of the Chapel Royal, The Reverend Canon Paul Wright.
Mr Holyoak told BBC News that "everyone was so relaxed and in such good spirits, it was an absolute pleasure".
The photographs were taken in the morning room and garden at Clarence House.
The following day the Queen, alongside other members of the royal family, attended the RAF centenary in London.
The duchess added, with a smile: "I hope he stays like this". Queen Elizabeth II and her husband Prince Philip didn't attend.
We especially can't get over George cheesing at the camera here.
Louis was sound asleep as he was carried into the Chapel Royal by Kate for the christening ceremony which lasted 40 minutes.