A big problem that many women face is that high fashion clothing is designed and marketed towards a very specific and highly rare body type: very tall, and very thin. This is the body type that is most attractive to homosexual fashion designers, because it most closely resembles the physique of the delicate thin young men they are thinking of, when they design the clothes. Many fashion models on runway exhibitions are not all that hot to look at, because that would detract from the job they are performing: selling overpriced clothes. If the model is too good looking, everyone is looking at her, rather than at what she's wearing, which defeats the purpose of the advertising.
If it's print modelling, or Victoria's Secret, that's similar, but not the same thing. In those cases, we just assume the clothes must be attractive, or a hot woman would be wearing something else.
Those body types tend to be favoured by the men of highest social status, (movie stars, pro athletes, rock stars, owners of large corporations, etc.), often as arm candy, or just because they are rare; there aren't enough of them do go around, so the top dogs grab one, to prevent another guy from having her.
Lying about one's weight is something almost every woman does. Maybe Kyra Graves and a half dozen other women in the world don't do that. When we see a celebrity in a photo, the image is usually airbrushed or photoshopped, and if they print the vital stats, they're lies, too. Imagine that a young and shapely woman has the identical real life body as a celebrity, in terms of height, weight, shape, and bust/ waist/ hips measurements. They both weigh 125 pounds, but the magazine article says the celebrity weighs 115. That girl thinks to herself that she needs to lose ten pounds, or she tells people that she weighs 115, and someone else who reads 125 on the scales thinks they need to lose ten pounds.
If you ask guys what body shape they prefer, most would say fit, with some extra meat on the bone. They'd like a woman that they would be proud to introduce to their male friends, and also one who would eat her whole meal in a restaurant, instead of picking a bit at some vegetables, and having 3/4 of her steak end up in the dumpster. They want a woman who is sturdy enough to take a bear hug, and not crack a rib, or get all bruised, like the princess who had a pea in her bed, in that fairy tale. Slimmer than 'real life average' is preferred, but hard bodies honed in the gym are often the first choice only of their male counterparts. In many cases, guys think that a hard and toned body may be either 'too masculine', or it's overcompensating for deficiencies in other areas, (personality, intelligence, etc.), which may or may not be true. It's like when a guy takes up bodybuilding, because he has a small dick.
One big disadvantage for anyone who is both large and untoned of body, regardless of their gender, is the message it sends, to potential mates. Carrying a lot of unnecessary pounds is the equivalent of wearing a T-shirt that says "I don't enjoy strenuous physical activity", which is exactly the wrong message you want to send, if you're looking to get laid as a civilian.
I covered more on this in an Ask bobistheowl! post, #355 on page 18, about how men select different physical traits for procreational and recreational sexual partners.