A garment stretching device comprising: a top T-member defined by a horizontal member and a vertical member, the vertical member having a plurality of notches longitudinally disposed along its surface; a top L-member defined by a horizontal member and a vertical member, the horizontal member and the vertical member each having a plurality of notches longitudinally disposed along their surface; a first bottom member defined by a top horizontal member, a vertical member, and a bottom horizontal member; a second bottom member defined by a top horizontal member, a vertical member, and a bottom horizontal member, the top horizontal member and the bottom horizontal member each having a plurality of notches longitudinally disposed along their surface, wherein the top T-member, the top L-member, the first bottom member, and the second bottom member are configured to adjustably interlock using the pluralities of notches in conjunction with corresponding locking mechanisms.