Shopify how-to June 15, 2026 4 min read
How to Add AI Fit Recommendations with Tailor Size Guide
AI uses purchase + return data to predict fit. 90%+ accuracy after 3 months.
How AI Fit Works
The AI takes: customer's past sizes, return history, fit feedback ("too small," "true to size") + product data (cut, fabric, stretch %). Predicts the most likely correct size for THIS customer + THIS product combo. Improves with every order + return cycle.
Setup
Install Tailor Size Guide. Enable "AI Fit Recommendations" in settings. The AI starts learning from day one. Predictions become accurate after ~50 orders + return cycles per product.
FAQs
AI fit recommendations?
Customer data + product data → size prediction.
Accuracy?
90%+ after 3 months of data.
90%+ fit accuracy
Tailor Size Guide's AI fit cuts returns 35-45%.