A support shirt including a shirt body and a pair of shirt body sleeves positioned adjacent to an upper shirt body is provided. The sleeves are attached to the shirt body at sleeve body holes, with each of the sleeves including sleeve reinforcement regions extending at least a portion of the distance from the sleeve holes to an outer edge of the sleeves. The sleeve reinforcement regions extend substantially along a centerline extending longitudinally across the sleeves and the upper sleeve body to stabilize and provide support to the shoulders of a wearer during an upward lifting motion.