The woman in the thong IS an example of them, actually. I bet Rubens would have loved to have painted her.

Over the decades, the average weights of Miss America winners and Playboy centerfolds have gone down...but their proportions have remained the same. That "hourglass" shape seems to be what men find sexy, perhaps because it's produced by estrogen, and thus signals fertility. That woman may be heavy, but she's very shapely. I could gain 100 pounds, and not look like her -- because I wouldn't gain it in the right places.