They are just plain black vinyl gloves that were too big for me so I had to make the buckles really tight to fit me better. Than I bought long, curved fake nails and painted them black on both sides and glued them to the finger tips. The top is just a zip down leotard with buckles on the sides that wrap around the back so you can make it as tight as you need it to fit.
It sounds so simple the way you describe it but I bet it took you quite the time to get it all together. Again, fantastic job on this! Is there any more photos coming of you where we can get a better look at the outfit?
Oh yes, some fantastic night shots would be awesome! Make sure you get some really low angles with this costume with some 'cat-like' views would be so awesome looking up at you and the city in the background. Especially if you can find an awesome ledge to shoot by. ^ ^
You are very welcome. I am always full of neat ideas. Are you thinking of doing a Film Noir style for it or a more sort of lighter anime appearance since it is an Ame-Comi cosplay. I think if you got a sort of spot light or direct light with a sheet of wax paper over the light would give you a very nice light for a more anime appearance.
Since you love color in most of your works, I think that would be great to have a colored paper over your major light sources as well if you bring any with you. ^ ^ I am not sure if you will just use the natural light or bring some lighting sources with you.