The ornamental design for clothing, as shown and described.
FIG. 1 is a front view of clothing showing our new design;
FIG. 2 is a rear view our new design;
FIG. 3 is a left side view of our new design, the right side view being a mirror image thereof; and,
FIG. 4 is a front view of our new design with the clothing in an open configuration.
The dashed lines in FIGS. 1-4 circumscribe a dress form, shown as a black area with white diagonal lines, and its lower stem. Said areas surrounded by the dashed lines represent unclaimed environmental structures and form no part of the claimed design.