This study is to investigate the fitness of tight skirt in moving lower limb. The fit- ness was tested by measuring the step length, stride length, maximum stair step height. One humdred and twenty female subjects participated in the experiment. It was shown that the tight skirt caused the most reduction in the maximum stair step height among the five lengths measured. It was also shown that the long tight skirt limited the maximum stair step height more than the mini tight skirt.