Lulus Exclusive! We're having a party and everyone's invited to celebrate the sexy style of the Open Invitation Backless Blue Dress! Stretchy jersey knit knows how to hug every curve down a bodycon fit with a rounded neckline and long sleeves, while an ultra sexy cutout at back (with top button closure) offers quite the view. Body of dress is lined. Model is 5'10" and is wearing a size small. 95% Viscose, 5% Spandex. Polyester lining. Hand Wash Cold.