How do I know what size to choose? 1. Follow the measurement guide below to measure your size. Usually need to measure your bust, waist, hips, etc. 2. Size chart differs from category to category. Each product page has a specific size description. Below the product image, find the product description and the size chart is in the description. 3. You can also refer to the size of the model. Below the size chart on each product page, you can find the model detail.