The ornamental design for a hospitalgown, as shown and described.
FIG. 1 is a front view of a hospital gown showing our new design;
FIG. 2 is a back view of the hospital gown shown in FIG. 1;
FIG. 3 is a right side view of the hospital gown shown in FIG. 1; and,
FIG. 4 is a left side view of the hospital gown shown in FIG. 1.
The short evenly spaced broken lines depict stitching, and form part of the claimed design. The long evenly spaced broken lines depict the bounds of the claimed design.