A spinal posture brace having a pair of assemblies, each including main support bar (2) with main support bar extension (3) and adjustment mechanism (4) at its inferior end and superior bar (1) and adjusting mechanism (4) at its superior end, with the assemblies being connected by thoracic strap (7), posterior waist strap (8), and anterior waste strap (9). Adjusting buckle (6) is present on each strap to adjust strap length. Lumbar strap (10) is present to provide additional support to the spine. Superior bar extension (11) is present to allow for height adjustment of superior bar (1).