Zimmermann Alchemy Halter Dress is a long, silk halter dress designed for evening and party occasions. It stands out for its braided halter neckline, draped side knot and open back, delivering a dramatic runway-ready silhouette. Key attributes: Blue | Sailor blue | Silk satin and silk chiffon | Nape hook closure | Side knot tie at waist | Halter neckline with braided trim | Sleeveless | Asymmetric draped design | Side knot detail | Open back | Gathered/ruching throughout | Composition & care: Silk satin | Silk chiffon | Dry clean only.