The ornamental design for a garment hanger body, as shown and described.
FIG. 1 is a front elevational view of the first embodiment of my new design, wherein the hook and adjustable clips are shown in dashed lines for environmental purposes only and are not part of the claimed design; and,
FIG. 2 is a front elevational view of a second embodiment of my new design, wherein the hook and adjustable clips are shown in dashed lines for environmental purposes only and are not part of the claimed design.