Ivanka Trump has reportedly been given a nickname by some White House aides: “Princess Royal.”

According to Vanity Fair, the eldest daughter of President Donald Trump is called the nickname – “although never to her face” – in Washington’s halls of power.

The moniker comes courtesy of some insiders who believe Ivanka, 35, may be getting above her station.

While she has limited experience working in politics, she has played a key role in her father’s administration. She scored her own West Wing office in January and has been front-and-centre in roundtable discussions and meeting with world leaders.

Her exalted position “has sparked frustration among aides”, reported Business Insider.

Particularly infuriating to critics was how the mother-of-three temporarily took her father’s seat between China’s President Xi Jinping and British Prime Minister Theresa May at a meeting of the G20 in Germany in July.

“Excuse me,” one former Trump adviser told Vanity Fair. “This is not a royal family, and she’s not the princess royal.”

At the G20 summit, Trump is said to have played the protective father and stepped up to the plate to bat for Ivanka.

“If she weren’t my daughter it would be so much easier for her,” the President reportedly said.

“It might be the only bad thing she has going, if you want to know the truth.”

Ivanka and her husband, senior adviser Jared Kushner, 36, are seen as ineffective in their roles, with some insiders “put off by the Trump family’s nepotism”, said Business Insider.

As a couple, “they do not grasp their essential irrelevance”, a Washington insider told Vanity Fair. “They think they are special.”

What Ivanka and Kushner don’t understand, noted the magazine’s writer Sarah Ellison, is “how to behave when you roll into Washington as the creature of someone else”.

Ivanka Trump and husband Jared Kushner during a dinner with President Donald Trump and Chinese President Xi Jinping at Mar-a-Lago. Photo: AP

“Most such people take a seat a little off to the side, at least until they get their bearings.”

The criticism is said to be getting under the pair’s skin. Washington “punctures their self-esteem on a daily basis”, said one friend.

Through any sniping, Ivanka has been busy.

With her clothing line said to be failing – retailer Nordstrom dropped it in February – she’s worked to lend a voice to working women.

Even critics noted her enthusiasm and drive: she’s met with lawmakers about tax credits that would help pay for childcare and held high-level discussions about issues facing businesswomen.

Since January, she’s flown to Germany twice to talk about increasing women’s access to capital.

Four months ago, she published a book called Women Who Work: Rewriting The Rules For Success. In July, the World Bank announced it would launch a fund with Ivanka to financially back female entrepreneurs.

Given that, she was panned this week when she issued a statement to The Wall Street Journal defending the Trump administration’s move to ditch an Obama-era initiative designed to close the gender pay gap.

“Ultimately, while I believe the intention was good and agree that pay transparency is important, the proposed policy would not yield the intended results,” she said.

With the heat being brought on her, Ivanka may pack up and leave Washington next year with Kushner and her family, said Vanity Fair – but not because she’ll be pushed out.

Said Ms Ellison: “They will save themselves from a damaged White House.”