Where to start...hmm. This will be based on Bib's Episode 1 costume, I like it the best. First, some notes on the Twi'lek:
On to the costume.
Bib wears a gold and black printed robe over a brown leather(?) tunic.
Will add more info as I figure it out.
My heavily-doctored-up (Photoshop) Bib pic: |