The ornamental design for a bibgarment for child, as shown and described.
FIG. 1 is an environmental perspective view of a bib garment for child;
FIG. 2 is a perspective view of the bib garment for child;
FIG. 3 is a front view thereof;
FIG. 4 is a back view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a right side view thereof;
FIG. 8 is a left side view thereof; and,
FIG. 9 is a cross sectional top plan view taken along line 9-9 in FIG. 4, showing the waist pocket detail thereof.
The broken lines shown in the drawings represent environment associated with the claimed design and form no part thereof. The full lines set forth the claimed design.