Abstract: A feminine performance costume garment for wearer use primarily in dance or competitive athletic activities such as gymnastic events and the like, and method of making the same, structurally comprising in combination an exterior costume garment and a panty brief undergarment wherein the undergarment is affixed integrally to the exterior costume garment by sewably stitched communication at the respective garment leg openings and vertically by stitching along the laterally disposed respective sides thereof, in such a manner so that during practice and performance use by one attired in such a performance costume garment combination the undergarment and exterior costume garment leg openings, by virtue of the combined structural construction of being respectively secured one to the other so as to move together as a unit, thereby eliminates the problem otherwise encountered by the exterior costume garment leg openings riding up to expose the undergarment in the crotch area and upper thigh leg areas of the wearer du