The disclosed invention is a human body clamping device. In one significant fashion application as a pelvic retainer principally for female use, it facilitates an open-sided thong-like garment. Whereas all clothing garments that extends from the waist down (bottoms, pants, underpants, skirt, bathing suit bottoms, etc.) must currently wrap entirely around the waist in order to stay up, this invention allows fashion designers to design new styles of garments that allow the hips to be fully exposed. The novel clamping mechanism in this invention, combined with nano-grip fabrics and surfaces, ensures that the invention remains secured to the body. For medical and therapeutic applications, it provides controlled pressure on a body part.