Black Button-Down Shirt Dress with Removable Belt (size medium or small)

Chic black shirt-dress with left breast pocket, four buttons plus a collar button, and a removable belt. One belt loop on left side, buttons on end of sleeves. A few spots of fabric wear (see photos) but otherwise excellent condition. Tagged size small but easily fits medium (I wear a size medium). Small for a looser look. Approx measurements: Ptp 20” Sleeve 23” Length 38.5” Garment tag removed. Likely polyester. Questions? Comment below!