I think its all about parental control.
I'm not embarassed to admit neither do I feel like my mother or a dictator, to tell my child what she can and can not wear surely that is my role as parent.
We give birth to our children and not vice-versa. At the end of the day unfortunately we do not live in a society whereby it doesnt matter what these young children wear, it does matter, it does draw inappropriate attention, that they are not mature enough to handle.
Its also the breeding ground of our girls to begin that journey of being obsessed about their weight, paying attention to their size and shape, wanting to look like the latest celeb and buying in too early to the mass consumerism and hype dicatated to us through magazines, movie stars and celebs etc of how the female form should be.
I'll have none of it in my house and like it or lump it neither will any child of mine.
I cant think why parents would allow their children to own such provactive clothing.