Actually, my girlfriend and I went to Pricilla's (a local adult store) and we ended up getting some fishnet stockings and top for mine. It's already black and it stretches so it'll be right up against my body suit. It was just over $20 with tax.
Try Michael's near the sea shells. I found some excellent brown netting perfect for a costume there. For a predator suit you'll need several packages. You can aslo find decorative netting at party stores about 2 bags there should do it.