This sports bra runs large, both band and cup size.  Also, it is not the most supportive bra I have ever worn; in fact, for a sports bra, it is about the least supportive.  The fabric is just too stretchy to provide the support needed for exercise.  It does provide plenty of coverage, though, for those who like to exercise in just a bra; having said that, the white is pretty shear.  I definitely would not purchase again.