Vixen - just a fabric shop - PVC's quite easy to sew, especially if you can get some with a little bit of "give" to help with fitting! I tend to use velcro (no, not because it's easier to strip (although that is an advantage...) rather than zips as it makes them easier to adjust on fat v thin days! Most impressively for me, that was all hand-sewing as the sewing machine had packed in. The back is excellent - I wish I'd taken a picture - I did it as a corset back with red ribbon lacing which looked great against the white.
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to live at all is miracle enough