*I bought these for my mom's dog, who wears a large. These are definitely NOT large. They would fit a Pomeranian, or the likes. Not small enough for a chihuahua, but having had a ton of dogs, I would call these shirts Small with a dash of Medium in them. ;) Compare the measurements with what you normally buy. I'll sell cheap for the trouble. These have never been worn, just taken from their original packages.