Miss Sixty wideleg jumpsuit pockets halter plunging neck XXL (runs small) y2k

miss sixty black jumper jumpsuit ("horse overalls") with side pockets. says size is XXL. y2k vintage runs small, more like a medium or large. it's modeled on my xs mannequin. see photos for measurements. waist band is about 16.5" flat across. no stretch. side zip extra wideleg. halter style with adjustable neck tie plunging neck line flowy 100% tencel (lyocell) excellent pre-owned condition 1539