First and foremost (and this is probably because I'm an ass man) The body part of a female that turns me on the most is ass cleavage. To have the perfect amount of ass cleavage AND the perfect bottoms to show it off is a true miracle.

After that I'd say a close second would be a woman's complexion. I have absolutely nothing against pale women, my wife being one. But to have a perfectly bronzed skin makes any woman just a bit more beautiful.

I'd say number three would be the eyes. For me, bright, radiant green eyes gives me an instant hardon.