Details, Size & Fit. High-waisted shapewear briefs. The Yummie Tummie Nina Shaping Shorties Pack of Three have a high-waisted rise, a seamless design to achieve minimal panty lines and double lining on The waistband for an ultra smooth look. The briefs feature a slim, stretch fit and a breathable gusset for added comfort.Machine Washable. SKU: YU343US94WJT.