FIG. 1 is a front perspective view of a showerhead showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof, the left side being a mirror image;

FIG. 4 is a top plan view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken line showing of the faceplate in FIGS. 1-4 is for purposes of illustration and forms no part of the claimed design.