Is it Power Girl's ever-expanding breasts? No, that's a long-accepted part of the character. Is it her fluctuating Kryptonian breastal vent? Let's face it, if it weren't for that, PG wouldn't get any press at all. Is it her camel toe seam? Sadly, no, she's had that for a while too.
Isn't it obvious? Power Girl is crosseyed. You're all looking at the silly window and haven't noticed that Amanda Conner can't draw PG's face.