I thought the Dragonfly necklace from Eolande's in Aurora was the perfect accessory to go with the gown. You can get the fatpack of these sets for 50% off until November 16th. She also has these sets in Butterflies if Dragonflies are not your thing.
Detour Beloved Night Hair (in 3rd picture)
Dutch Touch Jolie Carmel Skin in Frost
Eolande's DragonFly Charmer Short Necklace in Aurora (review copy)
Redgrave Eyes Venus Blue (free)