Ignoring any other deficiencies in the picture (the Goku-style hair is a particular favorite), the central character's upper leg and hip is drawn as though it were composed of one solid chunk of PVC (it certainly reflects light as if it is something synthetic), one smooth curve from the upper hip all the way down to the back of the knee. It resembles nothing so much as a piece of plastic food from a children's play set:
This seems to be a common sight in superhero comics art, if not one that is usually remarked upon, what with the oft-hilarious depictions of breasts receiving the majority of the mocking attention. But this is certainly an egregious assault on decent anatomical depiction as well, perhaps brought on by the ever-rising swimsuit cuts that come with the proliferation of crack-snuggling thongs, as well as a difficulty in drawing realistic posteriors, or attractive curves of any sort, really.
There's nothing wrong with a shapely leg, but whoever is creating these assaults against eyeballs seems to forget that legs have musculature; they don't just look like balloons puffed into somewhat human proportions. One need only glance at a beach, or, say, an underwear catalogue, to see what an attractive appendage is supposed to look like:
So, please, artists, inflate breasts if you must, and bend spines to display tits and ass simultaneously, but please pay attention to the way legs work. It can't be that hard, can it? After all, if you're going to ogle a drawing, it would be nice if it appeared to be human.