Tiara - 2003 Autobacs JGTC image girls, Miho Osagawara, Sawa Hashimoto, Hisami Asakura and Megumi Tsubomizu. 

A very rare find, these pictures were found on the WWW. I was not able to identify where these photos were shot, or if they were for a photobook, or indeed who the photographer was. If anyone can provide any information please contact me.