I've got something a bit different for you today. Poring through some random files I've had on hand, I discovered some Seventh Sister models used for two Star Wars games, Force Arena and Jedi Challenges. These models offer two realistic depictions of the Seventh Sister, moreso the former, which is cited on Wookieepedia as a canon source. As far as I can tell there isn't anything major here that contradicts the existing character, but there are some things that add to it. Some interesting things I've found:
The gloves appear to be made of leather or a leather-like material; this also seems to be true of the Second Sister. (Jedi Challenges model)
The boot covers are indeed soft material and have leather texture on both models.
The boot covers appear to be made of four panels, with seams on each side of the leg.
There is a seam running up the middle of the pant leg, and a stitching on the Jedi Challenges version, along the seam.
Neither model has triangles on the knees.
The armor is matte for both models.
Google Drive gallery of model screenshots: https://drive.google.com/open?id=1Kna0Z24jKN6-90hT-Wgj30E4tJHF6Lbm
Please note that I'm not saying this is something to be followed. I just discovered it, found it interesting, and thought I would share
I also have Fifth and Eighth brother models, which I can share as well. Would love to see CRLs for those some day.
Enjoy!