2d and 3d looks really good so far, the hard surface stuff is excellent, especially on the shoes (I should get around doing some hard-surface in zbrush...) and that harness-thing is also sweet-looking.
However, I do have some design related feedback, and that is on the strips of padding going all over her body. I get that this seems to be kinda the theme of the design, that they aren't very solid and are more loose, but I think it really distracts from an otherwise good design. I think it would look way better if you made them smoother, like if they were maybe from a harder material, like some kind of thick protection padding covered tightly with kevlar or whatever. Especially on the butt and core, they are really wrinkly, maybe if you tone it down to the same level as the legs that'd be enough? And maybe, try and angle some areas of these strips so they mimick the muscles underneath. Like the ones wrapped around her core could follow the direction of her obliques, and the ones on her but could go in the same direction as the glutes. Just a thought.
Also, I'm not generally a fan of very large breasts with vacuum-fitted clothing on top, since almost no women have those kinda proportions in the real world and the few ones that do wouldn't ever feel comfortable in such apparel (imagine the chafing, ouch). I think modest breast-sizes generally does a better job at projecting feminimity without being too in your face about it, and in this kinda otherwise utilitarian design I'd do the clothes as if she wore a sportsbra underneath, since that would make a bit more sense (and also look better I think). But that's just me.
Anyway, don't feel discouraged by my lengthy feedback above though, and just ignore it if you don't agree It's a really solid design and you're doing great progress, keep it up!