Throughout the ages designs might change but the specitical of high fashion does not. Woman parade down the runway or street showing off what they percieve as the best of what top designers have to show.
Designs range from daily wear, let's face it this is what people actually buy to the absolute weird. Oddities that even if you had the perfect body, you wouldn't wear for any reason other than to say, "I have it." That's if you had a string of assistance that could help you get into the contraption.
At least over the years some have been more entertainment than an over paid designer getting patted on the back by their peers. Even better, too thin models can be fit and have muscle rather than just a blank stare.