Black Square Neck Bodycon DressLulus Exclusive! The party don't start until you and the Lulus Sip of Champagne Black Square Neck Bodycon Dress walk in! This flirty little dress is shaped from medium-weight stretch knit fabric that sweeps from the trendy square neckline into a fitted princess-seamed bodice. The fitted waist tops a figure-flaunting bodycon skirt. An oversized keyhole cutout at back secures with a single button closure and tops a slightly elasticized back with a hidden zipper/clasp.