Joseph's 'Polly' dress is a versatile day-to-night piece. Cut from stretch-crepe into a flattering A-line shape, this sleeveless style looks just as chic with ankle boots and a leather jacket as it does with strappy sandals and a simple clutch.

• Midnight-blue stretch-crepe
• Concealed zip fastening along back
• 78% acetate, 22% polyester; partial lining: 85% cupro, 15% elastane
• Dry clean