Givenchy blouse with thumb holes and chain detail

Givenchy blouse with thumb holes and chain detail. The chain part has wear, antique look. The top is low key, it doesn’t look like it’s trying to be perfect, it fits the blouse style. The back has an area with tiny holes as pictured. Happened when wearing most of chain toward back and pulled against door. The chain is versatile to change up styling, front or back