Don't know about the original Costume parts but Here's my so far unfinished costume.. just the Gloves and the right two hole square buckled belt to get... can't seem to find the right one anywhere...
I saw the movie yesterday and loved it, now I'm interested in the costume as well. I'm not aware of any sources and I can't even seem to find decent pictures of the costume via Google though.
The shoes are Converse Chucks, right? They certainly looked the part and the soles seem to match up.
They look to be the all black chucks. The white you see was from the weird negative imaging they were doing. There were a couple scenes where there was no funky lighting, and they looked like the all black model.
That's something I noticed today in the Making Of book. For most scenes the shoes are all black but in some shots, the ones where they're highlighted of course, they used ones with white soles. Both are pictured several times in that book.