Gorgeous Orla Kiely retro cardigan—US size 6/UK size 10

This is a beautiful cardigan by Orla Kiely in excellent condition. It’s a deep midnight black (almost like a black-blue), with a retro leaf print. I would love to keep this, but unfortunately it was listed incorrectly as a US 10. It fits except that it’s snug in the arms, so it might work for a US 8–see measurements in photos.