The ornamental design for the baby garment, as shown and described.
FIG. 1 is a perspective view of my new and novel design of a baby garment in a snapped position;
FIG. 2 is a front view of my new and novel design of a baby garment in an un-snapped position; and,
FIG. 3 is a back view of my new and novel design of a baby garment in an un-snapped position.
The dot-dot-and elongated lined broken lines shown on the upper most portion of the article are for environmental purposes only and form no part of the claimed design.
The dashed lines shown on the article represent a stitching line.