Unique Maurice's dress 3x

Very unique 3x dress! Sleeveless/ shoulderless bodice: " collar" Multiple rows of elastic surrounding neck Opening in back with 2 self-covered buttons Bodice Blousoned with multiple rows of elastic Flounced, "Sharkbite" hem (separate piece sown on) Native-like zig-zag pattern in light brown & white No material tag. Feels like polyester, maybe some rayon