Target's Western-themed collection was inspired by the company's new AI trend-spotter. Dominick Reuter/Business Insider Fast fashion brands are pushing a new pace for traditional retailers like Target. In response, the company has developed an AI tool to spot rising trends and make better design choices. Target's head of apparel explains how the new Trend Brain is taking weeks out of product lead times. Fashion keeps getting faster. Retailers like Temu and Shein are setting a new pace for traditional stores, and Target says artifical intelligence is helping it meet the moment. Earlier this spring, the bullseye retailer unveiled a new Trend Brain tool that it is rolling out to designers for its portfolio of owned-brands like Wild Fable and Universal Thread. The tool takes a predictive approach, drawing on sources ranging from social media feeds to fashion show catwalk photos to real-time purchasing trends, to help the company anticipate where trends are headed next.…