The ornamental design for a shirt, as shown and described.
FIG. 1 is a back, right perspective view of a shirt according to the present design; and,
FIG. 2 is a back view thereof.
The evenly spaced broken lines shown in the drawings are directed to environment, are for informational purposes only, and form no part of the claimed design.
The presence of long and short broken lines indicates boundary lines, which define the bounds of the claimed design. These boundaries do not exist in reality in the article embodying the design. It is understood that the claimed design extends to these boundaries but do not include the boundaries.
The surface shading on the claimed portion is provided only to indicate the character and/or any contour or curvature of the surfaces. They do not indicate color, texture, markings that actually exist thereon, indicia, graphic representations, surface treatment, or any other ornamentation applied to the article.