A pocket square assembly for a garment enclosure includes a top assembly having a main body portion, a top portion, and a mounting plate internal to the main body portion; and a base assembly adapted to be precisely received within the garment enclosure, the base assembly comprising a slide holder and a mounting slider, wherein the mounting slider cooperates with the slide holder to provide infinite adjustability of the base assembly and defines a cavity for a base mounting component, and wherein the base mounting component detachably mates with the mounting plate of the top assembly such that the top portion extends a predetermined distance out of the garment enclosure.