OSS CBI Photobook 12, Part 2 - Koumintang 1945, continued

Kachin? Jingpo? Singpho?

I found this photo of Singpho ladies in full regalia,
having a side view of their hats,
of which we will see more as we go along.
They are not the same as the hat in the photo
above this one, which has particular features
in the back.  So the identity of these people
in the Photobook remains a puzzle:
somebody help me out here!