Women's casual tops should display the positive assets of women. If this is not to your liking there is a country called Afghanistan that will agree with your views. The word casual means not for serious things like business meetings or job interviews. Though there are many cases of womens casual tops appearing at such places Sometimes the women lose the job, other times they might have impressed somebody and been hired with the womens casual tops attire.

But, I digress.
Women's tops can cover such a wide variety of women's tops. A T-shirt is also a casual womens top. It can highlight a women's assets, how much she wants to display depends on what is put on underneath. With narrow shoulder straps, and as I said nothing too heavy on underneath, it is a very sexy bit of clothing. Many have preferences in color, but a simple cotton women's casual top is sufficient.
A silk blouse (besides being costly) can be defined as casual depending on the style. Nevertheless, there are few things sexier than a silk women's top. As a casual piece with jeans it is exquisite. In bright red or pale blue it will do wonders, the redhead with the red and the blue-eyed blonde with the blue. Not forgetting casual women's tops for the brunette or the raven-haired women, they could more or less wear the whole gamut of colors and get away with looking great in each color. If you can get away with it show as much cleavage as possible with the silk blouses.
In the same vein as the silk blouse, the leather blouse (not biker style) can be gorgeous on women. A women's top made of lambskin leather that is on the tight side is an eye-catcher for certain. When worn with an entire outfit consisting of leather pants or a leather skirt, it reaches the heights of casualness and displays clean sexuality. I dare say I have seen this at weddings and the dancers on the floor were so caught up with the sight that they were bumping into each other like the old bumper cars at the state fair. With either a silk or leather blouse the women need not worry if their bust is on the small side. It will not matter.
Women's casual tops have a purpose, to make almost all women beautiful. Women's tops can do things that you thought only your hairdresser or plastic surgeon can do.