The full essay is extremely well-known, freely available online for anyone interested, and not remotely 'nasty', just perceptive about the obsessive public interest in royal women's bodies in particular, and the terms in which they are constructed by the media. The bit I quoted was two non-consecutive sections which dealt most closely with PK's appearance, the subject of this thread, rather than other royal bodies (including Marie Antoinette, Anne Boleyn, Diana, Prince Charles (as was) , and the Queen) and concludes with a criticism which includes HM herself:
this is what discourse about royals comes to: a compulsion to comment, a discourse empty of content, mouthed rather than spoken. And in the same way one is compelled to look at them: to ask what they are made of, and is their substance the same as ours.
That's pretty much what is going on in this thread and others, an interest in PK's 'substance' -- and the extent to which it has been worked on, or artificially-constructed. Hardly surprisingly, because as far as the general public are concerned, she's a content-free zone. She exists to be looked at, and she fulfils that brief perfectly, with no evident quirks or oddities.