The ornamental design for the undergarment suspenders, as shown and desribed.
FIG. 1 is a front view of the undergarment suspenders;
FIG. 2 is a back view of the undergarment suspenders;
FIG. 3 is a side view of the undergarment suspenders with the other side view being a mirror image thereof, shown broken away so that the enlarged figure will fit on the drawing sheet.
FIG. 4 is a top plan view of the undergarment suspenders;
FIG. 5 is a bottom plan view of the undergarment suspenders; and
FIG. 6 is an enlarged end view of the adjustment end suspender detail in an open position; and,
FIG. 7 is an enlarged end view of the adjustment end suspender detail in a closed position.
The dashed lines shown in the middle and ends of the straps in FIGS. 1 and 2 are meant to indicate stitching and are a part of the design.
The broken lines shown in the drawings are included to show environment and are not intended to be part of the design.