I clicked on this thread because I remember how Brooke Shields' mother got her to model suggestively at the same age. The motivation was the same then, thirty years ago, as it is for this girl's parent's today. They know that a fast way to fame and fortune for a child blessed with beauty is to pimp her to the prurient interests of pedophiles. Brooke's father, Frank, opposed the project, but was shunted aside. The Shields were a fairly wealthy 'respectable' WASP family from the north shore of Long Island.
So my conclusion is that this pimping of youngsters has always been socially acceptable. We just don't like to admit it. It is a reflection on the state of our society ... our Judeo-Christian society.