The Bravado Allure Nursing Underwire Bra 160 won't add to your cup size because of its discreet, specially designed materials. The lightweight spacer fabric is breathable and won't allow show through, while the drop cups are easily opened with one-hand clasps to allow for quick and convenient access. The rounded underwire is constructed to avoid painful wire irritation to your bust, and internal cup slings give additional support, while the contour cups not only shape your bust, but will change with the fluctuations of your body.