The number of underskirts could even reach a hundred.

新娘的衬裙可以多达100层。

I'll bet that girl could sell a ruffled, accordion-plaited underskirt to a fat woman who was trying to reduce.

我敢打赌，那个女孩可以把一条褶边手风琴花结衬裙卖给一个想减肥的胖女人。

The outer skirt might be shorter than the underskirt for the same reason.

出于同样的原因，外裙可能比下裙短。