http://Poserclub.jp
Poserclub Japan are having a Swimwear Render Exhibition.

Members are invited to participate
Membership sign-up is free, but you may need to translate from the Japanese

Viewing for non-Members is free, I believe.
Click on the banner in the  middle of the opening page which says "2000" and has the big number 8 and 10 on it (that's the launch date of the exhibition in Japanese)
You get to a page with Japanese and English text, and you choose to enter either the General Audience or the Over-18 years section (nudity).

Eternal Hobbyist