Are shoppers to blame? As the huge fashion company seeks to raise money on the London Stock Exchange, conditions in Chinese factories 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.
Stock exchange - A place where investors can buy and sell stocks, which represent tiny portions of ownership in a company.
Uyghurs - A largely Muslim ethnic group native to Xinjiang, in northwestern China. Since 2014, the Chinese government has subjected them to abusive measures, including forced labour, internment camps and forced sterilisation.
MPs - Members of Parliament. MPs are elected to represent people in 650 different geographical areas.
Emissions - Things that are released, such as gases, as part of a process. E.g. greenhouse gases.
Cost of living - The money that someone needs to afford basic food, housing and clothes.