The ornamental design for a bra, as shown and described.
FIG. 1 is a frontal perspective view of a first embodiment of a bra showing the design;
FIG. 2 is a front elevation view of the bra of FIG. 1;
FIG. 3 is a rear elevation view of the bra of FIG. 1;
FIG. 4 is a left side elevation view of the bra of FIG. 1;
FIG. 5 is a right side elevation view of the bra of FIG. 1;
FIG. 6 is a top plan view of the bra of FIG. 1;
FIG. 7 is a bottom plan view of the bra of FIG. 1;
FIG. 8 is a frontal perspective view of a second embodiment of a bra showing the design;
FIG. 9 is a front elevation view of the bra of FIG. 8;
FIG. 10 is a rear elevation view of the bra of FIG. 8;
FIG. 11 is a left side elevation view of the bra of FIG. 8; and,
FIG. 12 is a right side elevation view of the bra of FIG. 8.
The features shown in broken lines are lines of stitching and form a part of the claimed design. The partial human figure shown in broken lines is environmental subject matter intended to assist in showing how the claimed design appears when being worn, and forms no part of the claimed design.