Lady Black Tie, Smoky Blue long tulle dress, beaded top, size 6

Bought it 2 years ago for my prom, never worn! ( Sizing was too big, fits a true 6) Beautiful tulle smoky blue prom dress with undertones of soft pink/ purple within the lower layer of the dress! Floral blue grey gold beading on satin top with spaghetti straps. The back is just a simple zip-up. Kept in pristine condition, has been kept in a plastic covering! The original price was 440 and selling for 350 + 5 dollar shipping, open to reasonable negotiations. The receipt is attached, please let me know!