@Hateam and @Edingril I've lived in a few countries. Some where this almost never happens, and the UK, where it does. You almost never see girls in some countries with hot pants, fake nails, fake tan and crop tops. And if you do they are tourists. Which means there is no peer pressure, which means there is no pressure on mums. In the UK you often have to choose between 'mini-sexualised adult' and 'Billy no mates'.
Some parents buy drugs for their children. We protect children against the poor choices their parents make. Why not do the same with clothes? It's repulsive that they are for sale to children.
Retailers are the issue. So is the media. All the repulsive sexual reality programs promote this vacuous nonsense as desirable. Bring back Mary Whitehouse, I say. Woman knew more than me. Sorry Mary.