A posture-supporting, spine-aligning garment to support and correct body alignment and general positioning in its wearer-users; the garment being aesthetically pleasing. Posture-support, spine-align shirt with “Backboard” Technology is designed to alleviate back pain by promoting proper lumbar and thoracic alignment, core stabilization, corrective shoulder positioning, and upper body support. Posture-support spine-align garment system comprises an upper body apparel assembly having an elastic retention system; flexible stretch bands; anchors; a backboard, spine-specific support; and at least one fabric cover. The device may be manufactured with all or without one or more of the mentioned items. Posture-supporting, spine-aligning garment may comprise a posture shirt in preferred embodiments.