Bobeau Long-Sleeve Flowy Cardigan

This rainbow Bobeau sweater doesn't have a tag, and I was told when I bought it that it was a size XL. I suspect it could be a large, as it's a little smaller on me than my other XL Bobeau. The mannequin is a size 14, and it fits perfectly. The fabric is a little faded/pilling (see photos) but still vibrant jewel tones in fuschia pink, purple, teal green, and gold with diagonal and horizontal stripes. It has one large button at the front and sits like a poncho with sleeves.