Anthropologie Pepaloves Tying Shoulder Whimsey Dress

New with tags. Solid black with black slip lining. Elastic waist. Modesty button on chest. Measurements are provided in the photos. Please keep in mind that the measurements provided are estimates. The shoulder straps and arm detail actually tie and therefore are size adjusting. Materials tag states this is cotton. But it feels more like a blend. Maybe a manufacturers irregularity? Pepaloves is a brand sold through Anthropologie. #CPB2