For a 40B size bra, the cup size was perfect, however, the band size was tight compared to the 40B's I have bought from regular department stores. My other bras of the same size, I used the first set of hook & eyes ( the ones close to the body of the bra).  With the Hanes, I have to use the last set of hook & eyes.  If I was any larger around, I would have no where to expand to and the bra would be uncomfortable.