The ornamental design for a pinnyclip, as shown and described.
FIG. 1 is an elevational front view of a pinny clip according to the present invention;
FIG. 2 is an elevational rear view thereof;
FIG. 3 is an elevational left side view thereof;
FIG. 4 is an elevational right side view thereof;
FIG. 5 is a plan top view thereof; and,
FIG. 6 is a plan bottom view thereof.
The broken lines showing in the figures are included for the purpose of illustrating environment of the design and form no part of the claimed invention.