Your evening wear gets an elegant update with No. 21 Printed Dress. The airy piece falls into a modest cut that grazes just above the knee, while the semi-sheer finish adds a touch of seduction.. Self: 100% silkContrast 1: 69% acetate 31% silkContrast 2: 100% polyvinylchloride. Dry clean only. Fully lined. Detachable slip lining. Sequin embellishment. Hidden side zipper closure. NO2R-WD11. H202 5594 0001. With a keen eye for trends of the moment, No. 21 offers a modern wardrobe of timeless sophistication with a refreshing flair of striking playfulness. Designer Alessandro Relacquer mixes feminine and masculine shapes into preppy, cool luxury pieces imbued with the innate sense of Italian femininity and style. The collection features immaculately tailored and demure silhouettes accentuated with eye-catching embellishments.