On redviper's pixiv page there is a link to an infoseek.co.jp page (just add the 'h' to the beginning) where some of the older clothes are now available. I know someone was looking for the Swimsuit and Goggles.
 
Just click on the bulldog clip symbol to download the file.

The files just have numbers -
12 = Gymnacstics Wear
10 = Pink Rotor - (Adults Only!!!)
9 = School Swimsuits and Goggles
8 = CL Uniform
6 = Cure Suits
All for Aiko4

Can't get my translation software to translate the pixiv site so not sure if I can post the link here. If someone can read japanese possibly they can confirm. Hope this is OK.

Poser Pro 11, DAZ Studio 4.9