Shein Zara Consumer Behavior Retail Industry Sustainability Brands Brandy Melville Brand Competition Retail Brands Consumer Trends Brand Collaborations Sizing Policies Brand Partnerships Sourcing Practices Design Theft Chinese Brands Global Supply Chain Forever 21 Ultra-Fast Fashion H&M Online Retailers Environmental Impact Waste Reduction Sustainable Fashion Gen Z Consumers Online Retail Trends Retail Struggles Recycled Materials Branding Brand Rivalry Online Fashion Retailers Online Shopping Supply Chain Labor Practices Market Trends