I am always amazed at how fashion will repeat as designers will pull from their archives older designs and concepts for inspiration and many times those older designs will come out, and each era does a retro revival. Even today you can find modern clothing designs using older looks like the puff or gathered shoulder, peter pan collars, empire waist lines, wiggle and flare skirts, etc. It can make it very tough sometimes but fun doing the detective work of who made it and when.