From what I understand the stitch doesn't take up dye and is bleach resistant. So a fake would have brown stitching. The info I can't find is the colour stitch used for the burgandy Lili. Every post I have read on the internet talks about white stitch but in reference to the white cape Bib Prototype. I'm assuming the stitch used for the burgandy would be the same burgandy as the cape but can't verify it. I found a bib with a burgandy cape with (I'm told) red stitching, wanted to check if this exists.