When it comes to my choice for women all women I found attractive were because of their facial expression, and not due to big boobs, fat ass or lack thereof. Smile to me in a friendly manner and you may get a connection with me quickly... The way your eyes look at me is key.
And when not trying to win me over for romance but when you just want me for a talk or friendship (and this goes for both males and females), it's a bit of the same story. Then your facial expression can get the best results.
I mean when a woman who has all physical characteristics that would count as "sexy", but has an expression like lightning bolts are about to burst out of her eyes, then I'll pass... Honest!
Of course, I know, like no other, that first impressions can be deceiving... When I get to know you better, I prefer an open mind who is willing to understand anything no matter how absurd and ridiculous it may be in the opinion of most people. Those are the people I like best, either in just friendship as in a romance...