Prince William And Prince Harry On Track To Mark Diana’s 56th Posthumous Birthday

Prince William and Prince Harry will honor their mother, Princess Diana, with a service at her gravesite, Kensington Palace confirmed on Wednesday.

The service will take place on Saturday, July 1, the day that would have been Diana’s 56th birthday. William and Princess Kate plan to bring nearly 4-year-old Prince George and 2-year-old Princess Charlotte as they join members of Diana’s family at the island on the Oval Lake outside Althorp House for a rededication of Diana’s grave. It will be a private service with no press permitted.

Led by the Archbishop of Canterbury, Justin Welby, the service comes as the princes move ahead with plans for a statue of their mother, which was commissioned earlier this year and will be erected at Kensington Palace.

Last year, Diana’s brother Charles, 9th Earl Spencer, told PEOPLE of plans to renovate the area surrounding the memorial, including the planting of forget-me-nots and rhododendrons. “They were Diana’s favorite flower,” he said last year. “I still remember giving her some when we were children. When I was six, I gave her a white pot of blue forget-me-nots.”