Unfortunately, that website is incredibly inaccurate. It's missing 26 and 28 bands for US/UK and 4 and 6 bands for AU; for UK sizes it's missing AA, FF, GG, HH, JJ, KK, LL cups and includes an I cup (which UK does not have); it says A and AA cups are the same thing for AU and US (they are not); for AU it's missing FF, GG and HH cups; and it assumes you can convert BEF and EU sizes directly with UK/US/AU cups. As can be seen from the "Cup size conversion" chart on this wiki article, that is not possible, since most BEF/EU brands change cups by 2cm, while UK/US/AU go by 2.54cm.

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