When you are taking measurements for your clothing, please compare against the clothing you already have, this will then help provide a better picture of what you'll need.
Here is we have a visual guide to help you measure your clothing:
There can be a slight change of measurement of around 1-3cm accounted for by hand measurements. You will see this pattern follows clothing stores such as Cotton On, Topman and Jay Jays. Any change from this standard and a sizing chart will be posted with the product.