This costume is a size small. The costume itself is made of satin like material in white and black with an attached jacket of shiny glittery silver. It has attached stuffed arms. The top of the costume, which is what people would see is approximately 9 inches long from the top of the neck to the bottom of the attached "shorts". The backside of the costume has an elastic opening with a wide velcro strap closing which would go around the neck. Dog's front legs would fit through the opening of the black satin like "shorts". Comes with a blond pigtail wig with pink bows. The wig has an attached elastic strap with a plastic toggle so you can adjust it under your dog's chin. I put a baseball inside the wig to show how it looks so your dog's head should be the size of a regulation baseball and not larger for it to fit well. Just a suggestion. You don't need to even use the wig. This is a very glittery costume. **also selling the witch's costume with hat shown in the last picture: sizes small and medium $10 each.See that listing or message me.