yes for full-figured girls, the bra clasp is thicker, so that means more to get to the bottom of the bra.
from hairline to top of *most* of my bras, it is 22.5" and then another 1.5" to make it to the bottom of the bra at 24" and from there, 7" till waistlength, at 31".
i'm probably at 24", will know at my touch-up in two weeks. And I hope to MAYBE go to 2" from waist, at 29"