Somewhere a good ways back up the line, Frank Miller went kinda nuts. I blame his Sin City series. Given the chance to draw all the scantily-clad or just-plain-naked fantasy/fetish hookers he could apparently overheated his brain, and for a long time now, he's been seeing women as mostly a random pile of tits, ass, eyes, giant lips, and giant hair. Not that this is unusual for a comics artist, but the Rob Liefelds of the world aside, most superhero artists kind of keep basic human anatomy in mind when they're drawing, at least before they add the cloud of improbable hair and the head-sized breasts. As of Dark Knight Strikes Back, though, Miller had clearly thrown anatomy out of the window, to judge by the number of women he drew with right angles in their spines and ass-cracks up to their shoulder blades.