Color block strapless maxi dress

Super comfortable maxi dress. Gray, black, and blue color block. Strapless. Cutout and nice detail on the back. I’m 5’6” and it hits the floor. Size XS - but lots of flexibility in size with fabric and flowy fit (I am No longer an XS in the picture and it’s very comfortable, but form fitting). Worn ONCE! Excellent condition. Purchased at Nordstrom.