The perfect casual summer dress, which doubles as a tank top. Wider, textured ribbing for more stretch and give. Mid-thigh le... The perfect casual summer dress, which doubles as a tank top. Wider, textured ribbing for more stretch and give. Mid-thigh length dress; tuck in to use as a tank top. 3/8" (1cm) Baby Rib binding for reinforced shape through repeated washings. Overlock hem for simple lines and durability. Order one size up for better fit will shrink an average of one size in the wash.