The ornamental design for a handbag, as shown and described.
FIG. 1 is a perspective view of a handbag showing my new design;
FIG. 2 is a bottom rear perspective view thereof;
FIG. 3 is an enlarged scale front perspective view of the handbag with the
flaps open and an intermediate portion of the carrying strap broken away
and omitted for convenience of illustration; and
FIG. 4 is an enlarged scale right end elevational view of the handbag with
the flaps closed and a portion of the carrying strap broken away and
omitted for convenience of illustration.