Cat ears in alternative clothing are common enough, but this is the first time I've seen a pair on a bolero-type cardigan. I cannot say for sure, but the ears appear to stay in shape better than they tend to, which is also a big thumbs-up. The tail in the back is delightfully weird.
Plenty of colour options available, although I have to say the black and white version looks the sharpest, in my humble opinion. Found here.