Upper-body garment assemblies with integrated waistband positioning systems. In some embodiments, the waistband positioning system is configured to maintain pants, skirts, leggings, tights, stockings, etc. in proper position against the forces of gravity. In some embodiments, the garment assembly includes at least one panel integrated with the waistband positioning system and configured to support another article of clothing and at least partially absorb and/or distribute the forces associated with supporting the other. The garment assembly may be any suitable type of top, shirt, brassiere, camisole, tank top, athletic top, or any other desired article of clothing having a panel with integrated waistband positioning system. In some embodiments, the waistband positioning system has one or more inner panels or areas configured to move independently from the outer layer of the garment assembly to support the weight of another article of clothing.