Zara

Zara dominates the fast-fashion spectrum by copying runway looks in under two weeks, producing 450 million garments annually. Despite promising to use 100% sustainable fabrics by 2025, only 12% of its current output meets that goal. Its volume is 40% higher than the average fast-fashion brand, and its parent company Inditex operates 5,500 stores globally. The brand's speed and scale exceed H&M's annual output by 30%, yet its recycling programs capture less than 5% of returned textiles.