I have large breasts, larger than some but not the largest, 40 DDD. This bra did not even pass the bounce test. I put it on and jumped up and down. FAIL. I like to run and do Turbo Jam and even Zumba, but with the way this bra is I doubt it would have even held up to my Zumba classes. Back to the drawing board. Does anyone know of any great support/sprt bras out there?!