It has been my observation that even tho' the media keeps pitching the skinny waif with implants, men still prefer women who are at the correct weight for their body type/ frame and are naturally endowed as opposed to 'modded'. Fitness is more important than size... you could have a twig with no muscle tone at all who will feel like bopping a bag of skin and bones or you could have a normal sized woman (and by that I mean, 'fit and healthy') with firm flesh. Which would you choose?
Attraction has a basis on how fertile and healthy a female is... and a starving woman is usually neither. Models are notoriously unhealthy... same with ballerinas. Sure, they have the 'look' for a while in their youth... but most don't age well unless they change their ways and start eating right.
Biology... you can't fight it!
(BTW, Marilyn was beautiful, but *not* very healthy... and that had to do with the way she treated her body, too. 🙁 )