The ornamental design for a bottlesupportingframe, as shown and described.
FIG. 1 is a perspective view of a bottle supporting frame showing my new design
FIG. 2 is a front elevational view thereof
FIG. 3 is a rear elevational view thereof.
FIG. 4 is a left side view thereof
FIG. 5 is a right side view thereof
FIG. 6 is a top plan view thereof
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a perspective view thereof, showing a wine bottle and additional bottle supporting frames in broken lines for illustrative purposes only and forming no part of the claimed design.