The ornamental design for a shower hairwrap, as shown and described.
FIG. 1 is a front right perspective view of a shower hair wrap of the instant invention;
FIG. 2 is a front side view thereof, wherein the back is a mirror image thereof;
FIG. 3 is a left side view thereof, wherein the right side is a mirror image thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a left side view illustrating the shower hair wrap in use; and,
FIG. 7 is a front, right side perspective view illustrating the shower hair wrap in use.
The broken line outline of the partial human figure assists in illustrating how the claimed design may appear when worn, but forms no part of the claimed design.