Of the far and few kilted ladies that were present at the Columbia SC Tartan Day, there were some differences between a mans and a ladies kilt that I observed in the modern dress style:

Length: Ladies can be shorter than or slightly longer than a mans kilt but I have not seen a lady in a kilt that came only to above the knees.

Design: Mens kilts wrap with the left hand apron over the right. Ladies kilts wrap with the right hand apron over the left.

Footwear: The ladies that I observed were wearing boots or shoes with nylons.

Kilt Pins: As the Lady likes.

I realize that this is not much help, but perhaps others will chime in.