Their outfits known as "flappers" showed their legs and their ankles (which wasn't normally allowed back then) but also the flappers made it easier to dance! Because of tight corsets and big dresses, it was hard to dance. Although, It wasn’t just their fashion that made flappers; It was also their behavior and attitude. Flappers were young, fast-moving, fast-talking, reckless, and unfazed by previous social conventions or taboos. They would be known as a "wild card".
Hope this helped, sorry if it isn't long enough!