For the best fit, please be sure to measure your dog or cat carefully before selecting a size. S: The height is 14cm, the bust is 30cm, the collar is 20-24cm, suitable for dogs or cats of 1.5-2kg. M: The height is 16cm, the bust is 34cm, the collar is 28-32cm, suitable for dogs or cats weighing 2.5-4kg. L: Height is 18cm, chest circumference is 36cm, collar circumference is 29-33cm, suitable for dogs or cats weighing 4.5-6.5kg. XL: The height is 20cm, the bust is 40cm, the collar is 30-36cm, suitable for 7-8kg dogs or cats. Made of high quality meterial: soft and silky to wear. Lovely design cute dog outfits for dogs male female. Great outfit for holiday season, Christmas, Halloween and pet party, etc. Warm and Cozy dog clothes for small dogs boy or girl even in the cold winter days.To take your dog to party or Halloween day, it must become the focus of the audience. If any of the measurements are between two sizes, choose the larger one. Please allow color difference due to lighting effects, monitor settings, etc. Please measure your puppy's cat's chest and back lengthfor the growing puppy, you'd better choose the bigger size. If you hesitate between two sizes, choose the big one.