The ornamental design for a swimsuit, substantially as shown and described.
FIG. 1 is a front, top and one side isometric view of a swimsuit showing our design in an opened fastened position;
FIG. 2 is a front, top and other side isometric view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is a right side elevation view thereof;
FIG. 7 is a top side elevation view thereof; and,
FIG. 8 is a bottom side elevation thereof.
The dash-dash-dash-dash broken lines shown in the drawing views are included for the purpose of illustrating portions of the swimsuit that form no part of the claimed design. The dash-dot-dash-dot broken lines shown in the drawing views define the boundary of the claimed design.