Rosie, Chris and Ann, you're all too good to be true!
William has had first hand experience of the media, including the way it treated his late mother, for his entire 30 years. Surely that knowledge and experience should have warned him to protect his wife so that she could not be exploited by the media in the way that she has been? The Cambridges cannot have it both ways. If they want to protect their personal image and the prestige of the royal family then they are very careful, it's as simple as that. It's the big drawback of who they are. I fully accept that if they were any other young married couple, what they did was not wrong. But they aren't and their decision has now ensured that the future Queen Consort can be publicly viewed topless for eternity.
In the meantime, it's a bit more tarnish on the monarchy for the Queen to polish off. HM has worked hard for over sixty years now with nothing like this ever touching her and she must wonder what on earth is going to happen after she is gone if her family continue to lapse so spectacularly and so often in ways that are so completely avoidable.
I don't see any tarnish on the monarchy at all from this. The only tarnish is on the photographer and the press who published the pictures. They were in private, doing nothing wrong, immoral or criminal. The fact that she was topless in a private situation was no reflection on her. Had the pics been taken through a window while she was changing would it be any different?
The Queen was lucky to have grown up at a time when the press was not so intrusive. Had the press been the same in her youth there would have been a lot more scandals (with the family, if not the queen herself) with the Duke of Kent, the Duke of Windsor, Princess Margaret in her youth and others. All were involved in things with which the press today would have a field day.