Abstract: A shirt with an elastic lower portion and a lower protruding band combines an upper shirt portion made of traditional shirt material with an elastic lower shirt portion made of elastic or stretchy material. The upper shirt portion and the elastic lower shirt portion are attached by a fabric interface. The upper shirt portion covers the majority of the wearer's torso, and the fabric interface is at or near waist level, so that the majority of the elastic lower shirt portion is at or below the wearer's waist level. A lower protruding band encircles the lower edge of the elastic lower shirt portion, which serves as an anchor for the shirt within a pair of trousers while the elastic lower shirt stretches to allow the wearer to comfortably perform movements that would otherwise untuck the shirt from the wearer's trousers.