Crotchless Queen Size Teddy with Open Bust. Black wavy line mesh halter style ties around the neck from silver ring attached above the open cup bust. Also ties in back below the bust (manufacturer's photo shows a clip style back, but that's been changed to a ties for better adjustability).
The barely-there back leaves little to the imagination (these are often called "Bareback Teddies"). Click photos for larger views.
EXPOSED "Queen One Size" recommended for dress size 14-18 (manufacturer suggests higher ranges, but we don't agree based on our experience).