Thanks wcw43921. It's amazing, you normally think of Asian women as having small boobs, but I've noticed there are a lot of Japanese "gravure" idols with big, natural breasts. I've been watching a few movies with this girl called Fuko, great face and body, but her movies are only softcore (I find most Japanese hardcore movies terrible to watch anyway because of the annoying mosaics/pixelization).
I totally agree with you. Katsuni has said that she now feels like she has the breasts she's always wanted, so it seems that it was just her personal preference to have bigger ones.
Jade Lee had nice big (natural) breasts (pic). She did 5 or 6 scenes back in 1997-98. Alliyah Yi had some good implants, not too unnatural looking (pics). Other than the ones already mentioned (Fujiko Kano, Loni, and recently London Keys) I can't think of other US-based Asian girls with big breasts. Sad...
This thread reminds of something that Fujiko Kano said in the pre-sex interview in a Red Light District movie. She said that in her hometown in southern Japan most girls have big breasts and hers would only be considered a little larger than average. If that's true, some brave US porn pioneer needs to scout talent in southern Japan. (As MikeOxhard says above, most Japanese-made videos are not worth watching due to that freaking mosaic/pixelation thing.) On the other hand, Fujiko's statement could be nothing more than the typical porn b.s.