Abstract: Storage pouch devices for use with a woman's bra. The storage pouch includes a front panel, a rear panel, and a cavity defined between the front and rear panels. The internal cavity is bounded by portions of the outer perimeters of both the front and rear panels that are attached together. The storage pouch is advantageously shaped and sized so as to be substantially or entirely concealable beneath one of a user's bra cups. The pouch further includes means attached to at least one of the panels (e.g., the front panel) for engaging a bra strap or bra cup so as to secure the storage pouch to a woman's bra strap or cup. The attachment means is specifically configured so that inconspicuous engagement and disengagement (and removal) of the storage pouch is possible by simply sliding the bra strap or cup into or out of engagement with the attachment means.