crown_lullaby wrote in egl

Bodyline shoe size question!

My friend is looking into buying these shoes from Bodyline:
http://www.bodyline.co.jp/bodyline/showProduct2.asp?id=2262&pageNumber=2&pageStop=stop_4&noSubType=N
And she was wondering whether the sizing was in centimetres or in the regular Japanese sizing, her foot measures 23.7 so we guessed to go for the 24, but in Japanese sizing 24cm is a 23. I bought a pair of them myself (0.5 bigger than my usual size because my size was sold out, but they're too big unless I wear a pair of socks in them) so I didn't want to advise her too much. Any information?

Thanks!