Medium, size 6-8 (see last photo for measurements). Cobalt blue. New with tags, never worn From site: You'll charm everyone you meet in the Lulus Vivacious Aura Cobalt Blue Chiffon Backless Midi Dress! Airy woven chiffon shapes adjustable spaghetti straps that crisscross the open back, form a strappy design as they support a V-neck bodice with supportive padding. Banded waist tops an A-line skirt that finishes at a midi hem. Elastic and hidden zipper/clasp at back. Fit Bust: Great for any cup size. Waist: Fitted - elastic waist allows stretch. Hip: Not Fitted - fuller skirt allows room for hips. Undergarments: Padded cups - May be worn with an adhesive bra, petals, or no bra. Fabric: Fabric has some stretch. Length: Mid-calf length. Size M measures approximately 41" from adjustable straps to hem. Details Shell: 100% Polyester. Lining: 100% Polyester. Hand Wash Cold. Do Not Bleach. Line Dry. Iron Low Heat. Imported. Lined. Style 2135156 Flirty dress | cocktail semi formal semi-formal date night holiday party business casual | spring summer fall flowing skirt dresses | crossed straps spaghetti strap slit | below knee length midi calf | cobalt royal true blue