NWOT Black Knit Cardigan with Red Blue White Yellow Trim

Black Knit Cardigan with Red Blue White Yellow Trim. Although size label is medium, measurements indicate it is more like a US Small; therefore I am posting it as a small. It would be a medium for a petite, in my opinion. Materials are viscose and nylon blend. Unbranded. Simple yet elegant. Good for everyday wear. New without tag and unworn. No issues noted. Armpit to armpit is 18.25”, Highest point of shoulder to front hem is 22.75”; Sleeve length is 21.75”. Measured while garment is laid flat with buttons closed. Model is 5.2” and 100 lb, wearing the same size as the item posting. Cardigan seems oversized on her as a petite. First 4 stock photos are of the same item for coloring and modeling references. Cover photo shows most accurate colors under natural lighting. Subsequent photos are of the actual item, taken under cool natural indoor lighting.