Are shoppers to blame? The Chinese factories where the huge fast fashion company's clothes are made are under the spotlight.
Shein workers exploited for £6 shirts
Unethical: Shein, founded in China and now headquartered in Singapore, has been criticised for exploiting low-paid workers in China to sell its clothes at knockdown prices. Workers do 75-hour weeks, earning less than 1p per garment. Glossary
Guangzhou - The fifth most populous city in China.
Fast fashion - Cheap clothing produced quickly by big retailers in response to the latest trends.
Wages - The money you earn from your job.