As we previously mentioned, most dog costumes are available in various sizes, designed to match most pet breeds and weights. Choosing the perfect size and fit should be done by carefully measuring your pawed friend and comparing its size, weight, and neck girth with the measurements provided by the manufacturing company.
If your pet falls in-between sizes, you should always go a size up to allow your pet to move freely, without the costume being too tight. However, not all measurements are accurate and this is why you should always try the costume first before buying if you have the chance.
Keep in mind that some products might have interior padding which will also count for a couple of inches taken off from the total size. Besides, washing and drying the costume might cause it to shrink in time, so we strongly recommend you to choose at least one size bigger than what your dog would normally wear.