Gap Inc. has partnered with Bold Metrics to pilot the Agentic Sizing Protocol, an AI-driven tool that generates personalized size recommendations through a few conversational questions and minimal body-data inputs. The protocol creates a digital twin of each shopper’s body and combines it with garment-level fit data to deliver human-readable guidance, such as whether a waist will feel snug or a chest relaxed.

Apparel e-commerce returns cost retailers billions annually, often due to sizing uncertainty. By integrating this AI sizing solution directly into shopping agents, Gap aims to streamline the purchase process, boost customer confidence, reduce return rates and improve sales conversion across its online platforms.