You know, I wonder what compels these aging beauties to behave this way? While at one time she was a very beautiful and appealing woman, no one stays that way. To me, she is embarrassing herself. I think her showing off on her birthday in a nice outfit would say a lot more about her.
It's been a very long time since I heard or saw anything about her.
My impression of this picture is that if she's really seventy-three years old, then she looks pretty good for that age, and that it would be quite possible for a reasonably-skilled photographer to take some very flattering pictures of her, nude or clothed. Whoever took this picture, however, did not achieve that at all; and any woman, no matter how young or otherwise attractive, would not look good posed and photographed this way.