Princess Diana’s favorite photographer, Mario Testino, has been chosen by Prince William and Kate Middleton to take the official pictures of their daughter Princess Charlotte’s christening on Sunday. Testino took Vanity Fair’s portraits of Princess Diana before her death as well as the official engagement photos for William and Kate in 2011. This marks another way that the royal couple will be paying homage to the late Princess, according to People.

The baptism will be held on July 5 at St. Mary Magdalene Church in Sandringham, the same church where the late Princess was baptized. The newest royal baby will be christened by the Archbishop of Canterbury, Justin Welby. Diana would have been 54 on Wednesday. 

Testino will take the main portraits of the christening party after the ceremony, the couple’s office at Kensington Palace said in a statement Tuesday. It also said that during his storied career, Testino has also photographed Prince Charles, Camilla, Duchess of Cornwall and Prince Harry. The portraits will most likely include one of William, Kate, Charlotte and Prince George plus Queen Elizabeth and both sets of grandparents.

“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,” the statement said.

“I am overwhelmed and honored 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,” said the Peruvian-born photographer.