Abstract: A convertible closure capable of adjusting and/or converting to accommodate the expansion and/or contraction of the waist and/or abdominal region of the wearer is provided. The convertible closure includes a droppable flap having a second waist band portion configured to be capable of operably engaging a first waist band portion of the garment at one or more points to form a convertible and continuous waist band about the garment such that the overall waist size of the garment may be adjusted to accommodate a wearer having a varying waist size. The convertible closure may, in some embodiments, also include a stretchable front panel disposed behind the droppable flap and configured to be capable of supporting the waist and/or abdominal region of the wearer of the garment when the convertible closure is fastened about the waistline of the wearer.