We claim the ornamental design for a hospital gown, as shown and described.
FIG. 1 is a front view of a hospital gown showing our new design in use;
FIG. 2 is another front view of the hospital gown of FIG. 1, illustrating a left panel in a closed position;
FIG. 3 is yet another front view of the hospital gown of FIG. 1 illustrating the left panel in an open position; and,
FIG. 4 is a rear view of the hospital gown of FIG. 1.
The dashed-dot-dashed line is a boundary line at the top portion of the collar that is included for the purpose of illustration only and forms no part of the claimed design. The broken line showing of environment in the drawings is included for the purpose of illustration only and forms no part of the claimed design.