This invention is directed generally to garment hangers of the type on which information clips may be locked, and, in particular, to garment hangers adapted to receive such a locking information clip so that its removal is prevented or strongly inhibited, and to the locking information clips themselves. According to aspects of the present invention the information clip not only resiliently engages a ledge adjacent the edge of the clip holder, but in addition is provided to discourage or prevent moving the clip side walls apart to disengage the clip from the ledge. In certain forms of the invention, further assurance of non-removability is provided by engaging edges of the clip with engagement elements on the clip holder, without interfering with use of conventional molding for producing the hanger. In other forms of the invention, other arrangements are provided to retain the clip on the hanger by strongly inhibiting lifting one or both side walls of the clip by use of fingers or finger nails.