We have Envision: Size & Fit Analyser this application help Shopify clothing store guide customer to buy the right size. It helps reduce returns from buying the wrong size. And give customer confidence to buy more (Increase sales).
This application can calculate customer body size and recommend the correct size to them.
https://www.sixatomic.com/envision-size-fit-analyser (https://www.sixatomic.com/envision-size-fit-analyser)
(https://i.postimg.cc/mhBFXNzC/Envision.jpg) (https://postimg.cc/mhBFXNzC)