How to measure your dog:
In order to ensure the best possible fit for your little one, please utilize the following chart as a guideline. We cater predominantly to smaller dogs from size xxxs->s However, we will make exceptions on custom orders.
The following is a suggested sizing guide. Please note that many breeds come in a variety of shapes and sizes, this is just an approximation based on standard sizing for the breed.
XXXS: Apple Chihuahua, Teacup Breeds Yorkshire Terriers
XXS/XS:Mini Poms,MiniPins, Mini Poodles, Chihuahua, Maltese
Small :Brussells Griffon, Toy Poodle, Silky Terrier, Cairn Terrier, Chinese Crested, Imperial Shih-Tzu 
Chewy the Imperial Shih-Tzu is wearing his size SMALL ChewyRox 100% Cotton Vest He weighs 8 lbs.