FIG. 1 is a perspective view of a showerhead assembly showing our new design;

FIG. 2 is a front view of the present invention of FIG. 1.

FIG. 3 is a rear view of the present invention of FIG. 1.

FIG. 4 is a right side view of the present invention of FIG. 1.

FIG. 5 is a left side view of the present invention of FIG. 1.

FIG. 6 is a top view of the present invention of FIG. 1; and,

FIG. 7 is a bottom view of the present invention of FIG. 1.

The broken line showing portions of the showerhead is included for the purpose of illustrating and forms no part of the claimed design.