Abstract: The present invention provides a bra that is preferably formed of seamless construction and that includes structural components that allow for accommodating changes and variations in bust size. In particular, the inventive bra can be used during times of maternity when breast volume is known to increase over a short time. The bra comprises expansible cups with interchangeable, formed support and shape elements that can be placed into pockets formed in the expansible cups. In certain embodiments, the invention also provides a bra for use when breast feeding, the bra comprising a drop-down panel.