Yeah, it would seem to me that a woman of that age should be beyond posting pictures of herself online asking such juvenile questions.
However, and this is unfortunate, I can totally see a man of the same age coming on and posting pictures and pretending to be that woman, thinking she'd be shallow and juvenile enough to ask such things about herself.
Not all men mind you, not most, but one who is convinced his wife/girlfriend is fat, when she is in fact totally normal, but wants to convince her that she's not as good as she should be. Even if someone was overweight, or some other aspect was out of the norm, if that person feels good about themselves, and are comfortable in their skin, there's no debate.
Playing with other peoples feelings and ******* with their self perception is selfish and wrong.