Ever since my partial mastectomy (a/k/a lumpectomy), I have been searching for the perfect bra.  The operation left one of the girls smaller and perkier than the other.  I settled for bras that were almost the sports type; I looked normal in clothes but never felt feminine and had to eschew even slightly deeper necklines.  This bra fulfills my highest expectations.  It is not only sexy and low-cut, but the stretchy cups accommodate both breast sizes (I call one the 25 year old and the other the 60 year old).  Since I am a DD cup, this is nothing short of amazing.
I would recommend this style to anyone whose breast sizes and shapes are radically different because of surgery or simply by nature.  My guess it that the bra would work well for anyone because of the cups stretchy-ness.  Oops, forgot to mention the comfort...divine.