This is a very interesting report; although I feel that I bring to your attention that I have tried to use Playboy data before, and there's a number of problems with it, which could possibly skew your results, and possibly render them inaccurate. 
 
1. Wikipedia data on Playboy models often differs from data given on Playboy's website (I assume this is because of transcription errors with one handed typing and not because Wikipedia editors have more accurate sources). 
 
2) Various literary sources mention that Hugh Hefner insists on choosing the Playmate of the month for each issue himself, so the data could be more about just one man's preferences, rather than a change in societal preferences. 
 
3) According to Leif Ueland, models often don't know their vital statistics. In his book about the search for the playmate of the millennium, he reports a story that when the girls were filling in their photo release forms; if they didn?t know their measurements, then the model coordinator would tell the girls to list their bra size, for both bust and hip measurement, and then just subtract 10" for their waist measurement. 
 
Hope this helps, 
 
Jonathan

White genius. Thus, "autistic" "unpleasant" "off his meds" "senile" etc. I wager that even with all his politically incorrect *old man whiteness* (horrors!) he can still think any of us under the table.

Human females from differing habitats the world over have been known to alter their apparent hair color by artificial means in order to suggest reproductive fitness. (Results vary.) 
 
In the New York City habitat, I once saw an African-American female with red hair. This unusual variation came out of a bottle. It usually does, shockingly racist and reactionary as that may sound. 
 
An interesting twist is artificially to alter the color of one's irises by means of a device known as a contact lens. I merely heard about this - I can't verify it and I don't believe it. No one could be that devious or so lacking in self-confidence about his or her appearance.

PS: You don't want a woman who majors in Literature or any Liberal Arts anything, unless you want one stuffed to the gills with PC and man-hostile to a fault. Go for the pleasant-looking, strong, and loyal hausfrau who will bear and rear healthy sons and bring lasting happiness to your life. I'm not joking.

Wishful thinking, guys. Those aren't brains. 
 
I never studied a day in my life and was graduated from NYU despite 1. not studying at all - for anything, and 2. not being Jewish. If you can get in ($$), you'll pass like gas. These cheesecakes (so-called; most are actually ugly and freaky-looking) aren't the genius sex-kittens of our dreams or nightmares. Get real. Truly intellectually over-endowed females are almost always in possession of faces that are good for radio - not movies.