Haute Monde Cutout Halter Maxi dress White Summer Pool party sz Large.
The pictures are terrible but I don't have a mannequin. Halter top bandeau back, tie in front, cutouts on the sides, maxi length with side slit. Polyester with a cotton feel fabric so it's soft. Narrow rib.
16 in across bottom of top section and hip area and 14 in across the waist area. I did the best I could.