An apparatus for facilitating hands-free breast pumping includes a bandeau that extends around a womans chest, the bandeau having a pair of openings each at least partially occluded by a pair of diaphragm each for receiving a component of a breast pump, such a breast cup and nozzle. Each diaphragm is defined by a plurality of panes arranged in an overlapping formation, such that each pane is secured along the perimeter of the diaphragm and includes an opposing free edge, the diaphragm includes a central variable aperture that is defined at the intersection of at least two, and possibly all of the free edges of the panes. Each pane overlaps one other pane and is overlapped by another pane so that the aperture is accessible by manipulating the panes to insert the pump components.