Beyonce's new Topshop collection is reportedly made by Sri Lankan factory workers earning just £4.30 a day.

Seamstresses making Beyonce's activewear clothing line Ivy Park is made to work more than 60 hours per week, for less than half the average Sri Lankan wage, it has been revealed.

The singer's 228-piece range has previously been criticised for being overpriced - with a pair of leggings costing as much as £100 - and excluding, as it only available up to a UK size 14.

Beyonce's Ivy Park range for Topshop is made in Sri Lankan factories by workers making just £4.30-a-day

The monthly wage for one of the seamstresses making Beyonce's Topshop collection is £87.26 a month - nearly £13 short of a pair of the Lemonade-singer's workout leggings

Beyonce was first congratulated on promoting body positivity with a range of sizes available - from XXS to XL - until it became clear that a size XL was a size 14 (US size 12).

Now the brand has come under fire over the conditions of workers in a factory in Katunayake, Sri Lanka where a part of the collection is made.

The workers make 18,500 rupees (£87.26) a month - a sum which would not even cover a pair of Ivy Park leggings at TopShop.

The female seamstresses pay 4,000 rupees (£19) a month to stay in a boarding house near the factory, The Sun on Sunday reveals.

'All we do is work, sleep, work, sleep,' a 22-year-old sewing machine operator told the newspaper.

'We don't have our own kitchen or shower, it's just a small bedroom. We have to share the shower block with the men so there isn't much privacy. It is shocking and many of the women are very scared.'

Beyonce, pictured during her Formation World Tour performance at the Rose Bowl in Pasadena, California on Saturday, has been criticised for only making her clothing range up to a UK size 14

Seamstresses making Beyonce's activewear clothing line Ivy Park is made to work more than 60 hours per week, for less than half the average Sri Lankan wage

The average wage in Sri Lanka is around 43,000 rupees (£164) per month, however the low wages at the factory are not breaking any laws, as the minimum wage is 13,500 rupees a month

Ivy Park is a joint venture, partnership and stand-alone brand created by Beyonce and Sir Philip Green. The collection is expected to the Topshop owner further boost his already healthy £4.2billion fortune.

A Topshop spokesperson told the Sun that 'Ivy Park has a rigorous ethical trading programme,' adding that the retailer 'expect our suppliers to meet our code of conduct and we support them in achieving these requirements.'

MailOnline has reached out to Topshop and Arcadia Group, which is owned by Sir Philip's wife Tina, a resident in tax-friendly Monaco, for comment.

Speaking of Ivy Park before the launch, Beyonce said:'When I'm working and rehearsing, I live in my workout clothes, but I didn't feel there was an athletic brand that spoke to me.

Sir Philip Green turns up to Topshop's flagship store to make sure the Ivy Park launch goes to plan, a project expected to further boost his already healthy £4.2billion fortune

'My goal with Ivy Park is to push the boundaries of athletic wear and to support and inspire women who understand that beauty is more than your physical appearance.'

She went on to say: 'True beauty is in the health of our minds, hearts and bodies.

'I know that when I feel physically strong, I am mentally strong and I wanted to create a brand that made other women feel the same way.'

This is not the first time Beyonce has come under fire for collaborating with a high-street clothing brand embroiled in a 'sweatshop scandal'.

In 2013, the singer was criticised for staying on as the face of H&M despite revelations of the conditions at its factories in Bangladesh.

Two factories in Bangladesh which produces clothes for H&M reportedly employed children, withheld wages and saw female employees sexually harassed by male supervisors.