We claim the ornamental design for a swimsuit, as shown and described.
FIG. 1 is a perspective view of a swimsuit showing our new design;
FIG. 2 is another perspective view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a front elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a left side elevation view thereof; and,
FIG. 7 is a top plan view thereof.
The dash-dot-dash broken lines adjacent shaded areas depict bounds of the claimed design and form no part of the claimed design. The dash-dash broken lines adjacent shaded areas represent bounds of the claimed design and illustrate features of the swimsuit that form no part of the claimed design. All other broken lines illustrate features of the swimsuit that form no part of the claimed design.