The Grévin Museum in Paris has unveiled a wax sculpture of Diana, Princess of Wales, dressed in one of her most talked-about outfits: the figure-hugging, low-cut little black dress the princess wore to a Serpentine Gallery party in 1994. The press dubbed it her “revenge dress,” because the event took place on the same evening that her husband, then Prince Charles, admitted on television that he was having an affair with Parker Bowles. Diana's wax figure has been placed next to the last French qu