We already mentioned her as one of the D1 Grand Prix Umbrella Girls: Eri Moriyama.

Eri Moriyama was born on 23 September 1980, in Tokyo, Japan. She went over to America to learn English and found herself centerfold in the Asian-American import car scene. She was first found on Soul Train and was working as a spokesmodel for Pepsi from 2003 through 2004. Other than modeling, She hosts a couple of Japanese TV shows (NHK American Music Award, Nippon TV The Wide, TV Tokyo and Then The Music Starts).Some selected links:
http://www.nemesisracing.com/featuredmodel/eri_moriyama/
http://groups.yahoo.com/group/erimoriyama/

Some interviews:
http://prestigiousmodels.com/interviews/eri.htm
http://www.bastardly.com/archives/2005/12/02/eri-moriyama-a-bastardly-interview/