The tunic is a one-shouldered design that covers the front below the waste, but ends at the belt in the rear. It is made of some sort of waffle weave fabric - a special thanks Aaron Farmer for the tip on the fabric! Check out Aaron's Kevin Flynn costume build. Here are the pictures I went by:
The fabric I chose was accidentally a bit lighter weight than that used in the film, so I doubled the fabric up. True to the film, I sewed in Velcro at the neck edge of the shoulder to mate up with Velcro sewn onto the unitard. This prevents the tunic from sliding down. I also sewed a Velcro seam on the right side so the tunic could be put on and taken off easier. I had never sewn until I did the boot shafts, and now this tunic. I was, well, happy enough with the quality of the job I did. Here are a few pics of my tunic:
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