Women by and large fail to understand that the vast majority of men, still being governed by their primitive side, actually don't want a girl whose stick thin with no figure. Psychologically, they want a woman who stands a reasonable chance of having children without trouble, who is fit and healthy and who has a reasonable sense of herself. Women are led psychologically to think stick thinnness is attractive not just because of modern day imagry and media presure but because in order to reproduce a woman historically had to be young, so they believe psychologically that an elfin appearance will make them appear more teenage and thus more attractive to males.
That's why ask any bloke and he'll tell you Nigella Lawson (18), Marilyn Monroe (16) etc are goddess's and if you ask a woman it's all about Kate Moss.
Lots of generalisations there, tear me apart at will ladies, but I honestly think that's about it. Anyone much under a 10-12 I find really unattractive.