An adjustable bed skirt for use between a mattress and a box spring that is comprised of a top strip portion having a vertically extended, downwardly draped side skirt portion connected to the top strip portion outer perimeter edges. Alternatively, the adjustable bed skirt can be attached to an existing bed skirt. The top strip portion is formed by one or more strips, therefore creating a bed skirt simple to install, adjust, and remove. The top strip portion has a left strip, right strip and a foot strip. An outer edge extends along an outside of the left strip, right strip and foot strip and an inner edge extends along an inside of the left strip, right strip and foot strip. The width of the top strip portion and a height of the side skirt portion is adjustable when the elastic portions are expanded or retracted.