Princess Diana Photographer Captures Royal Engagement Photos

Dec. 6, 2010— -- The sure-to-be-storybook engagement photos for Prince William and Kate Middleton may be months away, but the prince's choice of photographer is already making headlines.

Mario Testino, the famous photographer, also did one of the last photo shoots with William's mother, Princess Diana, for Vanity Fair that hit newsstands a month before her death in an auto accident in 1997.

For William, the wedding is very much about his beloved mother. For the engagement, William gave Middleton his mother's famous sapphire and diamond ring as a way to share the celebration with Diana.

"It's my mother's engagement ring, so I thought it was quite nice because, obviously, she's not going to be around to share any of the fun and excitement of it all. This was my way of keeping her close to it all," William said in an interview shortly after the engagement was announced last month.

The wedding site, Westminster Abbey, is also significant in Diana's legacy -- it's where William and brother Prince Harry last said goodbye to their mother at her funeral.

After Diana's death, Testino continued capturing royal shots of William and Harry on their 21st birthdays and the boys with their father, Prince Charles. He said there is clearly a bit of Diana's confidence and relaxed personality in William.

"And if you see her son, William, it's Prince William, it's amazing, the resemblance," Testino told ABC News' Diane Sawyer in 2006.