The backlash on social media has come amid growing tensions between the two countries over manufacturing. Earlier this month US vice-president JD Vance called Chinese suppliers “peasants”, saying: “To make it a little more crystal clear, we borrow money from Chinese peasants to buy the things those Chinese peasants manufacture.”

China is a major exporter of textiles. It produces around two thirds of the world’s clothes. The US is the largest market for exports from China, with the country sending around $49bn worth of textiles to America last year.

While large American brands have been starting to diversify their production away from relying solely on China – also sourcing from factories in Vietnam and Indonesia – it remains a crucial supply base for many companies.

Nike, for example, sources around 18pc of its footwear from China. Its share price has slumped around a third since the end of February, when the US president began stepping up his attacks on Beijing.

H&M sources most of its clothes from China and Bangladesh. Its shares are down around 11pc over the past two months.

Fashion companies have already warned the tariffs will push prices up.

Andrew Higginson, the JD Sports chairman, last week said things would become “more expensive if these tariffs stay at these highs”. He added: “It’s an illusion that this is just about cheap labour … These countries have invested a huge amount in the technology and the manufacturing capabilities it goes into making a number of these products.”

A spokesman for Lululemon said the company makes around 3pc of its finished goods in mainland China, adding: “Authentic Lululemon products are only available for purchase at our Lululemon store locations, registered Lululemon e-commerce sites and select authorised and speciality stores.”