I adore this dress, and it's the perfect all year round chuck on. For autumn/winter you can wear it with a fine knit, thick tights and boots. Wear as a tunic over skinny jeans or faux leather leggings. It has bell sleeves, no fastenings, and tiers.
You could add a fine jersey top underneath in cooler weather, or wear on its own in the Spring/Summer. You can easily create more shape around the waist by adding a belt.
95% polyester, 5% elastane - a beautiful crepey, drapy fabric that doesn't crease