zodee.com.au does as well (in fact, they sometimes go up to the 8FF - Laulaa may be interested in that).

I assume with this sort of thing, they buy directly from the manufacturer...

Although some brands avaliable in Myer make a small cut (even smaller than Elle MacPherson!). eg Kissed by Lovable, Kookai... I think they're the ones marketed towards teens, but if the bra fits...!