The ornamental design for a wighat, as shown and described.
FIG. 1 is a perspective view of a wig hat incorporating my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines shown in the drawings on the hat, including the band, illustrate those portions of the wig hat representing environmental subject matter that forms no part of the claimed design. The broken lines showing a person in FIG. 1 are included for the purpose of illustrating the wig hat in use, and form no part of the claimed design. The design consists partly of curly hair. Inconsistencies in how the hair appears in the different views are understood to be caused by the organic nature of the hair itself as well as to the different viewpoints from which the wig hat is shown. The minor variations from one view to another do not render the designs patently distinct, but are due to the organic nature of the hair.