An orthopedic device is arranged for scapulothoracic stabilization, inclusive of features for biomechanical stabilization of the shoulder, scapula and spine, treated alone or in combination with assembly features for supporting an arm or shoulder. The orthopedic device may be arranged in a garment or shoulder harness such that either may include first and second strap systems for extending over first and second shoulders of a user, respectively, and each of the first and second strap systems forms a “Figure 9” shape about the respective shoulder, with a strap section arranged to extend toward a waist stabilizer that may form part of the orthopedic device.