Wow, so many great responses already.
I don't have kids but grew up in a large family with lots of nephews and nieces ( I became an Aunty at 4!). I agree that many young kids seem to be growing up too fast. The thing is they want to be just like the stars they see on the video clips, but they are too young to understand how they look in some of the things they want to wear. I see young girls walking around wearing things so skanky that you fear for them.
It is up to the parents to try to intsill good manners/ morals and then they just have to trust the kids remember these when they need it. Even good kids can make mistakes, but hopefully they can grow and learn from them.
I really admire all parents for the hard job they do.