The ornamental design for a lowerlumbarsupport legging, as shown and described.
FIG. 1 is a rear perspective view of a lower lumbar support legging;
FIG. 2 is a rear elevation view thereof;
FIG. 3 is the front elevation view thereof;
FIG. 4 is a right side elevation view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The evenly dashed broken lines in the drawings depict portions of the lower lumbar support legging that form no part of the claim. The dash dot broken lines depict boundaries of the claim that form no part of the claim.