Actually, she looks like a character straight out of "Aeon Flux" (the cartoon, not the movie). We wouldn't be the least bit surprised if Stephanie's spine suddenly folded in three places and then sprang out so that she leaped and flipped through the air. In fact, we'll be disappointed in Stephanie if she doesn't do that.
Nothing in this world is certain, but this gives us faith that any dystopian society we end up with will at least be inhabited by babes with strange fashion sense and a willingness to kick our butts in a variety of ways. Peter Chung showed us it's possible and Stephanie shows us it will be.