Coco + Jaimeson shift casual summer dress small

Coco + Jaimeson sleeveless shift dress Two button back closure Keyhole back Floral red Lined. Loose flowy hem Size: Small Armpit to armpit: 17.5 inches Length: 32 inches New with tab. There is a small thread run at the end of the keyhole back. Hardly noticeable. Check last pic please. There are no other flaws noted.