Prince Louis's christening was held last week at the Chapel Royal in St. James's Palace in London.
Kate's sister Pippa, who is now pregnant with her first child, proudly stood with her husband James Matthews and brother James Middleton.
On July 9, Prince Louis officially became a part of the Church of England, and his entire family (minus the Queen of England) was there to witness the momentous occasion.
Prince Louis of Cambridge may be the smallest person in the official photographs of his christening but he was the most ostentatiously dressed.
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The third image shows the Cambridges as a family of five, with Kate Middleton lovingly looking down at her son as little Charlotte and George stand nearby with William.
Also attending were Kate's parents, her brother and sister and Louis' six godparents, who are close friends or relatives of William and Kate.
Mr Holyoak told BBC News that "everyone was so relaxed and in such good spirits, it was an absolute pleasure". Queen Elizabeth II and her husband Prince Philip were not in attendance, and are therefore not in the photos, due a week of busy engagements, according to Press Association.
"I only hope I have captured some of that joy in my photographs".
The following day the Queen, alongside other members of the royal family, attended the RAF centenary in London.
And in the last and most touching image, proud mother Duchess Catherine cradles her son in the gardens of Clarence House - their unbreakable bond on full display as the 36-year-old looks down at her son with pure glee and elation. As seen here, Harry's cheeky older brother Prince William ended up stealing the show.