Off shoulder New mini dress - Amazon dress

This is an Asian L bought online (will fit more like A ladies medium or like a junior L, has stretch). Of course the AD stated free returns but when I tried to return they told me I had to pay for it. So I never returned it. I paid $29 plus tax I thought it was black with floral when bought. It is actually a dark blue, off Shoulder. I loved the fit and ordered a new one in black . Stay put sleeves and stitched well. Never worn. No store tags it came To me in a plastic bag