First open the Taobao APP and click on the settings in the upper right corner of the My page.

Click on the settings and select My Profile.

Then click on the Add Body Shape Information column in My Account and click in to add it.

After clicking, it will show information such as shoulder width, chest circumference, upper circumference, lower circumference, waist circumference, hip circumference, etc. Just click and enter according to your own size.