This is my costume, I'll try to explain how I made it: http://www.cosplay.com/costume/390687/
As you can see here: http://www.cosplay.com/photo/3035799/
I've made just one piece attaching: the front line of beads, the leather stripes around the neck, and the back plate (made of a kind of foam). I wear it putting my head between the leather stripes.
The threee rows of beads (2 around the bust, 1 around the waist) can be opened, and I wear them after.
I've made the collars (http://www.cosplay.com/photo/3337572/
) with cables, my dad made a hook and a loop in order to open and close them, then I covered them with leather, and I made the colored stripes with wires and tapes.
Hope il helped (: