Zimmermann uses special sizing.

• A soft satin Zimmermann dress with a one-shoulder silhouette. Draped bow at left shoulder. Ruched side seam. Hidden side zip. Unlined.
• Fabric: Satin.
• 100% viscose.
• Dry clean.
• Imported, China.
• Measurements
• Length: 35.5in / 90cm, from shoulder
• Measurements from size 1