The obvious purpose for this fashion is to tease men with the flashing effect that is created by the movement of her legs. It is strangely enticing. Even if the slit is below the knee the effect is very sensual. A few months ago we asked a group of young Bible college men if they were tempted sexually by slit skirts, and every one of them admitted that they are. This should speak volumes to Christian women and young ladies to avoid this immodest fashion.
Hair styles are also statements.
The androgynous unisex image was not innocent. It was created by rock musicians who consciously intended to overthrow tradition. Dennis Wilson was a rebel and his appearance was merely a reflection of this. Well, we got rid of that small convention for them. The clothing industry is controlled by unsaved people who are in open rebellion against the laws of God.