The problem is that women's fashion has to change every year, preferably to some type of clothes that haven't existed before, because the economic model of women's clothes depends on at least a certain group of women buying new clothes every year, which they are less likely to do if the fashions haven't changed.
Unfortunately, all the good styles have already been invented, which means that in order to come out with something that's never been done before, it has to be retarded and look bad on most women. Sometimes they can be lazy and bring back an old style, like with the recent '80s revival, but designers do put their own stamp on it to make it technically new, and usually more ugly and inconvenient (a fine feat with '80s wear). Making the material thinner is always a great trick.