Agreed.
But a woman wearing shorts (and thus showing her thighs) isn't sinful either.
Yes, some shorts can be very short, but how short is short?
And with this in mind, if pants cover more of a woman's body than a dress does (ones that shows her lower leg area), then why don't the Duggars wear these instead?
Women shouldn't wear mens clothing?
Godly people did in Moses time as well as in Abraham's time. Both wore robes. The point is, there was a differentiation between the robes that were worn.
A woman wanting men other than her husband to think of her sexually is sinful, because it is enticing to lust. A man thinking sexually of women other than his wife is sinful, because it is allowing for lust. The problem is not with the skirt, but that doesn't mean that skirts are ipso facto OK. It is a meat-sacrificed-to-idols issue: a Christian woman may know that she could wear a skirt without sinning, but if it causes others to sin, then she should not wear it, not because of her own conscience, but because of the viewers'.
I have heard the Dugger’s say over and over it is a matter of modesty. The younger girls wear leggings and the niece and grandmother wear slacks, as well as the future MIL of Jill Dugger.