Wow. There's so many things about this I don't even know where to begin.
1. I think the main problem with the comic book costume is that in real life, her nipples would be showing. Women do not have nipples on the outer edges of their boobs!
2. She's definitely wearing a body suit in at least some of the shots. Her skin is too matte looking and there's not enough texture, esp on her stomach.
3. I have no idea what this movie is or the quality of the rest of it, but this seems like kind of a step down for Fritz Lang compared to, say, Metropolis.