The ornamental design for a maternityhospitalgown, as shown and described.
FIG. 1 is a front elevational view of a maternity hospital gown in accordance with my design;
FIG. 2 is a back view thereof;
FIG. 3 is another front elevational view of the maternity hospital gown of FIG. 1, depicted without the belt with bow; and,
FIG. 4 is a back view thereof.
The broken line showing of a belt with bow and closures is included for the purpose of illustrating environment and forms no part of the claimed design.
The broken line showing of the empire waist, waist gathers, and rear placket are superimposed upon the underlying surface and form no part of the claimed design.