9 Ways Prince William Is Keeping His Mother's Memory Alive Within His Own Family

The legendary Peruvian photographer Mario Testino was one of Diana's personal favorites, and he snapped many of the princess's most iconic pictures, including her 1997 Vanity Fair shoot, which was published just one month before she died. It was Mario who William chose to shoot his engagement portraits in 2010 and the official photos from Princess Charlotte's christening in 2015.

Charlotte's christening was also held at the St. Mary Magdalene Church in Sandringham, the same church where Diana was baptized in 1961.