William and Harry inherited their mother's amazing jewelry collection and ... human interest and celebrity. The late Princess Diana only had one engagement ring — and Prince William poignantly ...

When Kate Middleton and Prince William stepped out to announce their engagement, the bride-to-be was wearing a very familiar piece of jewelry on her left ring finger: Princess Diana's engagement ring!

Here, WWD breaks down all the details behind Diana’s look, the 1996 Met Gala and more.