I don't think the Kunoichi robe/belle dress looks right. Even with the one that I made, I started out with using a belle dress and it did not look good at all, so I ended up swapping it out with some trousers.
Hm, I suppose you're right. The 'loose leggings' on the Belle Dress always disturbed me, so if I ever get a chance to try it again, I might try Scaled Suit or the leather leotard + Huayin Socks under the Kunoichi Robe. I would use leggings of some sort, but with the Kunoichi Robe you can still see the top through the sides, so I may just use the one-pieces instead.
I just tried the robe and it doesn't look good. I also adjusted my Altaïr a bit from my original concept. Now I like how she turned out. Also included is the formula so y'all can make your own. Holla.