As a small shouldered, big busted woman it's hard to find a bra that fits!  The cup size on this bra gives adequate coverage, no bulging.  The straps are comfortable and do not cut into the shoulders (A+).  I am between bra sizes so I order a size that fits snug and then use a (1 clip) extender to make it comfortable.  If I go the next size up, bra tends to ride up in the back during the day from all the weight in front.....  drives me cra,cra!
Ps:  after this snug bra is worn awhile (becomes comfortable) it does stretch out a little.  At that point the extenders are no longer required.