Augustine Button Up ShirtThe Augustine Shirt features a gorgeous black and white forest, mountain, floral blended print and comfortable, soft, stretch fabric, Size Guide Size Chest Girth (cm) Length (cm) Weight Guide XXS 39 24 2. 8 3. 8kg XS 45 28 3. 5 5. 5kg S 50 33 5 7. 5kg M 55 37 7. 5 10kg L 60 43 9. 5 15kg If you are between sizes it is best to take the size up, for example your pups chest measurement is 46cm you would select size S. These tops are stretchy so have a few