Glamorous Ivanka watches from the stands as brother Donald Jr and step-sister Tiffany dazzle the crowd at the RNC and make sure the Trump children steal the show

Ivanka Trump made a glamorous appearance at the Republican National Convention as her father was confirmed as the party's presidential nominee.

The businessman's eldest daughter watched from the stands as her brother Donald Jr and step-sister Tiffany gave doting tributes to their father from the stage at Cleveland's Quicken Loans Arena.

The mother-of-three is set to introduce her father for his showcase speech on Thursday.

But she still turned heads at the venue as she laughed with her siblings and smiled from the stands.

She then headed down to take part in the roll call.

All of Trump's adult children were together on the convention floor as the real estate billionaire officially sealed the GOP bid for the White House.

Two of them then took to the stage to throw their support behind The Donald.

Tiffany, 22, who graduated from the University of Pennsylvania just a few months ago, portrayed her father as a doting dad who scribbled notes on her report card.

He also praised him for calling her when a close friend died.

'When I graduated college a couple of months ago, I never expected to be here tonight, addressing the nation,' said Tiffany Trump, the daughter of Marla Maples, Trump's second wife.

She noted how she had given a couple of speeches in class before. 'But never in an arena with more than 10 million people watching,' she added.

'But, like my father, I never back down from challenges,' she said.

Earlier in the evening, Donald Jr, Trump's eldest son, sent him over the delegate count needed to win and then celebrated with his siblings.

He then delivered a blistering indictment of Hillary Clinton and emerged as a high-profile supporter of school choice and gun rights on Tuesday night as he praised his father just hours after the elder Trump claimed the Republican presidential nomination.

'If Hillary Clinton were elected, she would be the first president who couldn't pass a basic background check. It's incredible!' he told a packed convention floor in Cleveland's Quicken Loans Arena.

'Hillary Clinton is a risk Americans can't afford to take.'

Trump Jr, 38, soaked up applause from thousands – and then tweeted: 'Now that was intense. What a rush.'

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