Women at the factory, which makes home textiles for the brands, said that they were forced to work excessive hours on weren't even allowed toilet breaks.

The BBC also had claims of poor working conditions from Stafford, an Indian supply to Ralph Lauren.

Three American brand has said it will investigate Our South Asia correspondent Virginia by the Northern has this report In the world of fashion, they're the for gotten the women who make our clothes a million miles from the catwalk.

They often live in dire poverty, their monthly salaries barely enough to feed their families.

But these women produce garments for some of the world's biggest brands.

Ralph's talent beyond creating beautiful things is his talent to recognize people.

Ralph Lauren's clothes don't come cheap, but women we spoke to say they're paying a far higher price.

Workers at one South Indian factory, which supplies the label earners little is $3 a day, making clothes which sell for hundreds.

They say they're forced to work, punishing hours to finish orders and even end up sleeping on the factory floor way are made to work continuously, often through the night, sleeping at 3 a.m. then waking up by five for another full day off work.

Our bosses don't care.

They're only bothered about production.

They ask us to work so late.

I can't even feed my Children at night.

They shouldn't treat us like slaves.

They should give us respect.

In a statement, Ralph Lauren said it was deeply concerned by the allegations on Will investigate.

We require all of our suppliers to meet strict operating standards to ensure a safe, healthy and ethical workplace on.

We conduct regular third party audits at all factories.

The factory concerned has denied all allegations.

We also talked to female star but another Indian supplier which produces home furnishings, the big British brands such as Tesco, Marks and Spencer and Sainsbury's speaking from their village.

The women told us they're made to work in appalling conditions which would be unthinkable for employees of the same brands in the UK were not given time to drink water were not even given time to use the bathroom.

We barely get time to eat lunch.

They have increased our workload, were forced to stay late to finish it or the yella death and threatened to fire us.

We're scared.

In statements, all three supermarkets said they were shocked and troubled.

To hear the reports, Sainsbury's said it's insisting on a number of actions the supplier must take in order for us to continue to work with UM Tesco's told us that plan includes prohibiting excessive overtime, strengthening grievance procedures on ensuring workers are fully compensated at the correct rates for the hours they've worked.

While Marks and Spencer said it has a robust plan in place on would be undertaking regular unannounced audit to ensure its implementation.

Earlier in the year, there was an outcry after allegations of exploitation emerged in British factories supplying the fashion label Boo hoo.

But activists say the bigger issue lies in Asia, where most of our clothes are made.

Exploitation happens for the people who make our clothes around the world on a regular basis, but it's out of you and people are engaging with who those people are.

But Franz really have a responsibility to look at what's happening in their supply chains, and say, Are those people being treated fairly?

Are those people being exploited as consumers chase cheaper clothes and brands bank bigger profits?

It seems that the exploitation of the women who maketh, um, is one thing that hasn't gone out of fashion.

Virginia Vaidyanathan, BBC News India.