SPANX, the go-to undergarment for shaping your body into a curvaceous masterpiece, has gone denim! Offering the best structure, stretch and shaping the SPANX Denim Leggings will perfectly fit on any woman's body. More Styles Inside. SPANX Denim Leggings are designed with a double-layer stretch waistband and side zip closure for a bulk-free fashion statement. Styles range from a wax finish, real denim fabric and an array of color choices to style the perfect outfit. Happy Shopping, Tattlers!