The present invention provides an overlay for conventional signs that provides multi-dimensional visibility. The overlay includes a number of individual trim sections disposed around the peripheral edge of the sign. The trim sections have an interior slot that engages the peripheral edge, and a reflective surface on the rear portion, and optionally on the edge portion, of each trim section. A connecting cable is received in a channel of each trim section, and the free ends of the cable and connected to secure the trim sections in place around the sign.