Self-preservation?

I can't really pinpoint exactly when some genius had decreed that this pose was sexy. From then on, it seemed like every female celebrity had her photo taken where she sits on her haunches in a skimpy outfit (better if the breasts are almost spilling out and the legs are exposed) and stares straight into the camera and tries to look either sexy or happy, never mind that the pose actually makes her look like she's suffering from either diarrhea or constipation. And they don't seem to get that the pose is not flattering at all. Aside from squeezing the thighs till they look humongous, it also foreshortens the legs, accentuates the bumps of the knees, bunches up the abdomen, and makes the poser look like some kind of midget or dwarf.

Still, sexy stars would actually DIE if they didn't have at least one photo of themselves looking like this. Rufa Mae Quinto, being the quintessential "sexy star," of course needs a photo of herself in this generic pose.