FIG. 1 is a front perspective view of the new design; FIG. 2 is a front view of the mirror frame shown in FIG. 1; FIG. 3 is a right side view of the mirror frame shown in FIG. 1 (with the left side view being a mirror image thereof); and, FIG. 4 is a top view of the mirror frame shown in FIG. 1. The bottom of the design is plain and unornamented. The rear of the design is plain and unornamented.