I will reserve judgment until I have read the article and know whether any member of the Middleton family spoke to the magazine. If they didn't, they should not be criticised for it.
I will, however, and perhaps somewhat cattily, say that I am surprised to learn that Pippa is only 23. She looks older to me, and has a look that suggests she has spent a
lot of time partying and/or lying in the sun. Which is completely irrelevant, I know, and catty, but...........
ETA Maybe she is older. I recall reading yesterday in an article, about Helicoptergate I think, that William is 23.