I talk to my 5 year old about why I don't like how LOL dolls dress and read her passages from the Bible about women dressing decently and modest. And 10 year old boys grandparents gave him a really revealing picture of a female anime character and I talked to him about not seeing girls for just looks, the more important thing is that you like talking to them, you share interests, etc. It's a really brutal world to navigate out there.