I can only say what did it for me.
Several years ago I ran a Web site to distribute the desktop wallpapers I made. I started out making wallpapers featuring well-known American and European supermodels, actresses, and singers. My source material was JPEGs that I found on the Internet, mostly scanned from mainstream magazines. Using these photos presented a challenge, in that most magazine photos are small and of low quality (very grainy, print from the other side of the page showing through, etc.). Enlarging these small photos would only degrade the quality further, so of necessity I found myself limited to creating photo collages of the women rather than full-screen, single-image wallpapers. Also, the fact that the same photos appeared over and over again on every site I checked meant I only had a very limited selection of photos of each woman.
One day I stumbled, quite by accident, upon some photos of a Japanese model named Kimika Yoshino. The first thing I noticed (okay, the second thing) was that the photos were large, sharp, and very high-quality. In other words, excellent source material for creating my wallpapers. I did some exploring and discovered two things:
• Japanese female celebrities are promoted in print not only through traditional magazines but also through something called “photobooks” — perfect-bound magazine-sized books printed on high-quality glossy paper, with many full-page and even double-page photos. A photobook is usually devoted to a single celebrity, and as such includes many photos.
• There is something of a cottage industry consisting of talented individuals scanning the photos from these books and posting them on the Internet. These “scan artists” are guys who are experts at scanning photos and enhancing the scans.
The result was that I found myself with literally hundreds of large, very-high-quality photos of each Japanese celebrity.
I said all that to say this: I was amazed at how stunningly beautiful all these Japanese ladies were, and I wondered why I found them so much more attractive than the Western women whose photos I’d been working with. I finally figured it out. Where the Western models seemed to always look serious, even grim, or at best have blank facial expressions, the Japanese women were almost always smiling in their photos. They looked like they were having fun, not like they were “working”.
I don’t think I’ll get any argument when I say that a smiling woman is always more attractive than an unsmiling woman. A smile can make even the most plain woman attractive. A smile also makes a woman more approachable. If you see two women in a bar, one a gorgeous, statuesque blond who looks at you like you’re wasting her time, and the other a pretty Japanese woman who smiles and says “Hello!” when you approach her, which one would you keep trying to talk to?