Blend the elegance of high-end evening wear with elements from dark fairy tales. 
Think of "an enchanted garden at midnight" 
The key is in the texture and movement. Avoid stiff fabrics and opt for flowing ones,

Fabrics: Light velvet, Chantilly lace, black or deep tulle, silk and organza.
Colours: Jet black, but also dusty "jewel" tones: burnt burgundy, forest green, midnight violet or smoky grey.
Silhouettes: Midi or high-low dresses with layers of tulle.
Flared sleeves (poet style) or off-the-shoulder with lace detailing.
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