In grad school I consulted for a company making CAD software for clothing designers. They said that 60% of the clothing business is women's clothing, and the other 40% shared between men and children.
That other 40%, if shared equally between men and children, means that approximately 80% of the purchasing decisions are made by women. I am basing this on the chauvinist assumption that women pick out and buy the majority of clothes for the kids. If this article is correct, that 80% holds for a lot more than clothes: http://www.clickz.com/3363331
If it is 60/40 by quantity, I bet it is more like 75/25 by cost. But you do say "60% of clothing business". So I guess the cost was already taken into account.