The ornamental design for a frame for flowerbouquets, as shown and described.
FIG. 1 is a perspective view of a frame for flower bouquets showing our new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a top plan view of FIG. 2;
FIG. 4 is a side elevation view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a detail view of one of the holders, shown without the rest of the claimed design for convenience; and,
FIG. 7 is a detail sectional view of one of the holders taken along the lines “7-7” in FIG. 6, shown without the rest of the claimed design for convenience.