Designers and distributors of Ivanka Trump’s clothing line do not get paid maternity leave

G-III Apparel Group, which has worked with Ms Trump since 2012, only allows 12 weeks of unpaid leave

Ms Trump has increasingly positioned herself as an adviser to her father on women's issues (Getty Images)

At the Republican National Convention last month, Ivanka Trump made it her business to speak of equal pay for equal work and of policies which would help mothers get back into the workplace.

Yet her Ivanka Trump-branded dresses - including the one she wore onstage - were manufactured and distributed by G-III Apparel Group, a company that offers no paid maternity leave to its employees, according to the Washington Post.

The group only offers staff 12 weeks of unpaid leave, the minimum legal requirement for employees that have worked at least one year at the company.

G-III could not be immediately reached for comment.

“Gender is no longer the factor creating the greatest wage discrepancy in this country. Motherhood is,” Ms Trump said at the convention.

“As a mother myself, of three young children, I know how hard it is to work while raising a family. And I also know that I’m far more fortunate than most. American families need relief. Policies that allow women with children to thrive should not be novelties. They should be the norm.”

The oldest daughter of Donald Trump, the Republican party’s official nominee, has increasingly positioned herself as a key adviser to her father on women’s issues.

But she faced criticism after it was revealed that the manufacturers of her clothing line, including jackets, ties and cufflinks, are based in China - despite her father’s pledge to bring back jobs to America.

Ms Trump could not be reached for comment.

Her own company, Ivanka Trump, employs 12 people and offers eight weeks of paid leave after giving birth.

The 34-year-old and executive of the Trump Organisation has employed G-III since 2012.

Sonia Ossorio, president of National Organisation for Women, New York, told The Independent that the G-III practices point to the “hypocrisy” of the Trump campaign.

“Paid maternity leave is an issue that women have been asking for since they entered the workforce,” she said.

Ivanka Trump and Eric Trump attending a GOP presidential debate (Getty)

“The ability to bond with your children and take care of infants is incredibly important and those mothers and fathers who aren’t given that basic human right, they suffer for it in many ways and so does our society and economy," she added.

Ms Trump was congratulated by her father at a campaign rally in Bethpage, New York, when she walked on stage to introduce him just 10 days after she had given birth to her third child.

But she has come under fire for her views on women facing sexual harassment at work, and her friend Chelsea Clinton has publicly questioned Ms Trump's confidence in her father implementing equal pay for women.

Ms Trump is reportedly in regular contact with the G-III team and is involved in designs on a weekly basis, according to the Washington Post.

Ms Trump has written a book called “Women Who Work: Rewriting the Rules for Success”, which is out in March next year.

“For the CEO of her own company or a recent college graduate, a mother working full time at home to raise a family or a part-time freelancer, this book celebrates the fact that, when it comes to women and work, there isn’t one 'right; answer,” the descriptive caption reads.