What is claimed is the ornamental design for a slow cooker skirt, as shown and described.
FIG. 1 is a perspective view of a slow cooker skirt, showing the new design as affixed to a slow cooker;
FIG. 2 is a perspective view thereof, illustrated in a flat, arched configuration;
FIG. 3 is a front elevational view thereof in a flat, straight configuration;
FIG. 4 is a rear elevational view of FIG. 3;
FIG. 5 is a top plan view of FIG. 3; and
FIG. 6 is a bottom plan view of FIG. 3.
FIG. 7 is a left-side elevational view of FIG. 3; and,
FIG. 8 is a right-side elevational view of FIG. 3.
The broken lines in FIG. 1 showing a slow cooker illustrate environmental structure which forms no part of the claimed design. It is understood that the broken lines within the surface of the claimed design indicate stitch lines which form part of the claimed design.