About 5yrs. ago, I went w. my friend's sis. who is two yrs. my age & white (we've known each other since childhood, so it's all good b/t her bro. & I, we're like bro's. She ain't like a sis. to me, though), who at that time, had about 44DD. It's too big for me. My current girl is a "C"; rather big for an Asian gal, but I want her to gain more weight. So, usually.... if they're too big, they're most likely 'cos of weight gain (my girl; though, Koreans in Korea have a natural "gift" of bigger breasts for the Asians; my girl is Chinese.) &/or natural. A lot of cases though are from implants. I haven't had the misfortune of experiencing dating a woman w. that situation. I'm happy w. my girl's "C" cup, but a little bigger, is nice, but not quite a "D". It's too big. I'm "mix." A general preferance is also a bit according to culture, not jus' "color." i.e.; watch "Fat Girlz" w. "Monique", you'll know what I'm talking about. In Africa, a thin woman is unhealthy, 'cos of the situation there. They like the more "plump" girls, incl. in the Middle East. So, it's preferance, situation, & culture, etc... Sry. for blabbing, but you ask'd the question, I'm not really going to give much of an opinion, usually facts.