A garment with an adjustable waistband and modesty flap includes a garment material having a waistband that originates and terminates at a closable seam, the seam having opposed edges extending downwardly from the waistband that define a V-shaped open configuration when the edges are spaced apart from one another and a closed configuration when the edges are adjacent one another. A waistband extension member extends from a waistband terminal end. A plurality of waistband fasteners are spaced apart along a waistband outer surface, each waistband fastener having a configuration complementary a waistband coupling member for selective attachment thereto. A modesty flap is attached to the garment generally adjacent one seam opposed edge and configured to extend across the seam open configuration. A plurality of flap fasteners are spaced apart along the waistband inner surface, each flap fastener having a configuration complementary to a flap coupling member for selective attachment thereto.