Abstract: A height-adjustable bedskirt assembly includes a generally rectangular support sheet having fasteners for adjustably coupling together a longitudinal fold in the sheet surface, and an elongate skirt. The support sheet includes fasteners which extend along the perimeter margin and engage similar fasteners which extend along the upper margin of the skirt, to permit easy removability of the skirt while the support sheet remains in place beneath the mattress. The support sheet includes a plurality of rows of spaced fasteners for adjustably coupling together a pair of longitudinal folds in the sheet surface. The support sheet also includes elastic keepers adjacent the corners for securing the support sheet to an underlying box spring.