I made my own suit.
I used this pattern:
Kwik Sew Patterns - Kwik Sew 3389 - Kwik Sew Sewing Patterns for Mens - Pants - Kwik Sew Pattern Reviews
And modified it to have all the needed features for Boba. You have to be decent at tailoring a garment. The sleeves and legs need to be tighter, collar changed, add the double sleeves and pockets... not super hard, but not super easy either.
I used some heavy white cotton fabric that I dyed grey using a blend of RIT dyes and paint that I didn't really keep track of.