First, I would like to say that this is a beautiful and sexy bra.  The construction appeared supportive; however, it just did not work for my breast shape.  I have ample sized breasts (38H UK), but the ravages of time have taken their toll and I no longer have enough top breast fullness.  Yes, I have the old age sag :(.  That said, because of the lack of upper breast fullness my breasts did not fill the cups. But it IS a lovely bra.