FIG. 1 is a top view of a bottle stopper according to my new design;
FIG. 2 is a left side view;
FIG. 3 is a rear view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a front view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a rear perspective view thereof;
FIG. 8 is a front perspective view thereof;
FIG. 9 is a rear view thereof attached to a bottle;
FIG. 10 is a right side view thereof attached to a bottle;
FIG. 11 is a rear perspective view attached to a bottle; and,
FIG. 12 is a right side perspective view thereof attached to a bottle.
The broken lines in the figures showing a bottle are for illustrative purposes only, and form no part of the claimed design.