The present invention embodies a garment which can smoothen motions of its wearer by a new technique, which is totally different from that of exerting a tightening force on a muscle, according to findings that the range of motion of a joint can be widened if a structure for extending and gathering respective parts of a skin gathering and leaving when the joint works in relation to bending/extension or abduction/adduction of the wearer is added to the garment and that the range of motion of the joint can be widened if a structure for moving the skin along a direction of motion of a muscle when the joint works in relation to turning of the wearer is added to the garment, on the basis of a close relationship between a motion of the skin when the joint works and an extending direction of a tension line.