A harness is provided for supporting an arm or an article against the front torso of a body. A fastener of the harness is fastened to clothing at the rear waistline and a strap extends upwardly from the fastener and over a shoulder of the body to the front torso. A support member or loop disposed at a free end of the strap adjacent to the front torso receives and supports an arm in a bent or flexed position against the front torso. A second strap, fastener, and support member provide enhanced support for the arm. Special application for the harness has been found for supporting an injured arm in a cast.