The family tradition Princess Charlotte will share with mom, dad, Princess Diana

He has snapped photos of her parents and her grandmother, and now, the celebrity photographer with a long connection to the British royals has been selected to take pictures of Princess Charlotte at her christening this weekend.

Mario Testino, who took the official engagement photos of Prince William and Duchess Kate, has been asked to photograph the christening party following Charlotte's baptism Sunday.

WATCH: See the first photos of Prince George, Princess Charlotte together

“The Duke and Duchess are delighted that Mario Testino will help capture this important moment for their family and look forward to sharing the photographs with the public,” Kensington Palace said in a statement Tuesday.

Princess Charlotte, as her parents left the London hospital on May 2.

In addition to Charlotte’s parents, Testino also has photographed Prince Harry, Prince Charles and his wife, Camilla, the Duchess of Cornwall, but he is probably more known for his memorable collection of Princess Diana photographs.

"I am overwhelmed and honoured to be chosen to document this occasion and to carry on the documentation of the family that is the soul of this country, a country that has given me so much,” Testino said in a statement released by the palace.

MJ Kim / Getty Images
Photographer Mario Testino attends the press view for "Diana, Princess Of Wales By Mario Testino" at Kensington Palace on November 22, 2005 in London, England.

Charlotte’s christening will take place at St. Mary Magdalene, located on Queen Elizabeth’s Sandringham estate in Norfolk, just outside London. While the service will be private, the couple have invited the public to wait outside the church during the ceremony.

Mario Testino / Reuters
Testino took this 2010 photograph of Prince William and Duchess Kate to mark their engagement.

"The Duke and Duchess are hugely grateful for the warm wishes they have received since Princess Charlotte's birth - many of them from local people in Norfolk - and are delighted the paddock can be opened on the day of the christening,” the palace said earlier this week.

The christening will give the world another chance to see the baby princess, who was born May 2. The infant has not been seen since Kensington Palace released four photos that Duchess Kate had taken of Charlotte and her big brother, Prince George, at their home in Anmer Hall, the royal couple's country home.

Princess Charlotte is the fourth in line to the British throne, behind her brother, their father, and grandfather, Prince Charles.

The Duke and Duchess of Cambridge chose another celebrity photographer, Jason Bell, to chronicle the christening of Prince George when he was baptized in October 2013.