Fast-fashion giant Shein could see its stock market valuation reach almost $27bn (£19.8bn) when its makes its debut in Hong Kong on 1 September.

The long-awaited move comes after failed attempts to list in the US and London due to regulatory challenges amid scrutiny of the firm, which has its headquarters in Singapore but was founded in China.

Since it was founded in 2008, Shein has risen to become one of the world’s biggest fast-fashion retailers, with customers in more than 150 countries.

The e-commerce giant is known for selling ultra-cheap clothes, backed by a vast network of factories in China that are able to quickly manufacture new products based on the latest trends.

Shein said in a filing on Monday, external that it will offer nearly 280 million shares for between HK$47.60 ($6.07; £4.45) and HK$49.50 each.

At the top of the range, the share sale would raise $1.77bn (£1.3bn) for the company and give it a market valuation of $26.8bn.

But that is much lower than the $100bn it was worth in 2022, reflecting weaker sales growth and higher costs.

The initial public offering (IPO) is being backed by Wall Street investment giants Goldman Sachs, Morgan Stanley and JP Morgan.

The company will make its highly anticipated debut on the Hong Kong stock exchange after efforts to go public since 2023.

Hong Kong has been revived as “one of the largest IPO markets” after attracting more firms from mainland China, said economics associate professor Feng Qu from the Nanyang Technological University.

Shein is likely to command a higher valuation in Hong Kong than it would in London, where regulatory scrutiny derailed its plans to sell shares there, Feng said.

Chinese companies may also be wary of selling shares in the US as tensions between the world’s two largest economies could result in firms being de-listed, he added.