No. 21No. 21 Open-back Tulle Gown

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Although Alessandro Dell'Acqua adopted a mannish slant for No. 21's Pre-AW17 collection his fascination with the golden age of 1940s cinema shines through in this teal-green tulle gown. Long blouson sleeves and a nipped-in waist creates a typically feminine silhouette but it's the open back and black velvet necktie that ensure a dramatic finish. Sky-scraping heels will make the perfect evening pairing.