Studio Momo (http://www.3dcg.ne.jp/%7Emomo/) has just ended its popular amateur and semi-pro oriented CG gallery exhibition called Momo Exhibition at the end of Apr. There were a bit less than 338 entries among which a bit less than 100 were female characters.
Momo Exhibition is known to be a place many good virtual beauty images gethered and some of these authors were already pretty popular among the community, such as;

Roba (http://www.ne.jp/asahi/peppermint/blue/sub1.htm)

KamiyaSO (http://www14.plala.or.jp/umbrellajp/)

Yasuhiro Kimura (http://www1.odn.ne.jp/yk_zero/)

A-Masayuki (http://www5a.biglobe.ne.jp/%7Eaoirokou/)

H.K. (http://www.tcct.zaq.ne.jp/b-rabbits/Page/BasePage.html)

Wantan (http://www007.upp.so-net.ne.jp/wantan/)
The exhibition was a web based but the pages had been closed already. If you missed it this time, then try coming back to the site in Aug for 27th Momo Exhibition.