I don't know, but I ordered a 40C, and when I tried to put this contraption on, it was as though I was trying to put on a 28B.  I'm not kidding.  The straps were SHORT, even though I extended them all the way.  And, there is NO WAY it is a 40.  MAYBE a 28, BUT I doubt it.  I couldn't even get the thing on.  The other 40C bras from a diff manuf fit fine...