Use a soft tape measure

1. Lower neck circumference: measure around the base of the neck.

2. Chest circumference: Measure around the widest point of the chest.

3. Belly circumference: Measure around, behind the rib cage, at the slimmest point of the belly.

4. Short back length: Measure from the base of the neck until where you took measurement № 2.

5. Long back length: Measure from the base of the neck until where you took measurement № 3.

6. Front chest length: Measure from the tip of the chest bone until the widest point of the chest.