The moment Ivanka lost her cool: Normally picture-perfect daughter jabs her finger as the entire Trump clan shoot daggers at Ted Cruz 

Ivanka Trump is widely known as The Donald's composed, picture-perfect daughter -  but Wednesday night the world saw a different side as she contorted her face and jabbed her finger accusingly following Ted Cruz's controversial speech.

In a floral-themed white dress, the mother-of-three looked furious as the Texas senator refused to endorse her father during the Republican National Convention in Cleveland, Ohio.

And she wasn't the only one. The fiercely loyal Trump clan -  made up of Ivanka's sister-in-law Lara, her half-sister Tiffany, brother Donald Jr. and his wife Vanessa - all flanked the businesswoman and shared looks of sheer disdain. Noticeably missing from the box was Ivanka's husband Jared Kushner, who earlier in the day accompanied his wife and in-laws to welcome running mate, Indiana Gov. Mike Pence, to the convention. 

The mood only lifted when Donald took his seat in the middle of them, having made a surprise entrance at the very end of Cruz's speech in what appeared a move orchestrated to steal the Texas senator's thunder. 

Together the Trumps started to smile again and wave to the cheering crowd as Cruz hurried off stage and Eric Trump began his speech.

But even then Ivanka could be seen with a pained look on her face, as she whispered into her father's ear.

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If looks could kill: Ivanka Trump is normally a picture-perfect daughter of the Republican presidential candidate, but Wednesday night she was seen jabbing her finger (above, alongside Lara Trump, center, and Tiffany Trump, right) as Ted Cruz refused to endorse her father

Any problems? Ivanka seemed upset while speaking privately with her solemn-looking father. Texas senator Cruz had told the audience and millions watching at home across America to 'speak and vote your conscience'

Turning the air blue? The father-daughter duo were not impressed with Cruz, who did not say he supported Trump during his speech. Video footage later emerged showing Cruz's wife being led out of the Quicken Loans Arena in Cleveland as the crowd turned

Trump himself later pointed down to someone outside of the VIP box during the speeches at the GOP convention Wednesday night

If looks could kill: The cold fury of the entire Trump plan was on display as Cruz spoke

Stony faced: In a rare moment, Ivanka stared into the distance as her father spoke to her briefly. Cruz refused to speak out in favor of Trump (above, with Ivanka) - the GOP's official nominee - at the convention

United: The Trump family all sat together to support his quest for the White House. Pictured above left to right: Vanessa, Eric, Donald, Ivanka, Tiffany and Lara Trump

Focused: Eric and his wife Lara listened to the speeches as they locked their hands in a loving grasp

Sweet moment: Eric gives Lara a gentle kiss on her hand as she gazes on

'I am not in the habit of supporting people who attack my wife and attack my father,' Texas Sen. Ted Cruz said Thursday as he defended his refusal to endorse Donald Trump

Video footage has emerged showing Cruz's wife Heidi (circled) being led out of the Quicken Loans Arena when the crowd turned on him

Cruz, only moments before, had told the audience and millions watching at home across America to 'speak and vote your conscience', all the while refusing to speak out in favor of Trump - the GOP's official nominee. 

The majority of the audience appeared to share the Trump family's disgust and began yelling 'Trump, Trump Trump', shouting down pro-Cruz forces in the crowd.

Video footage later emerged showing Cruz's wife being led out of the Quicken Loans Arena in Cleveland as the crowd turned.

'People were closing in on her physically from down the stairs,' Ken Cuccinelli, a former state attorney general who is a delegate from Virginia and a leading Cruz backer, told DailyMail.com.

Eric Trump, son of the Republican presidential candidate, and his wife Lara Yunaska observe proceedings during the Republican National Convention

Donald Trump shared a lighthearted moment with his eldest daughter Ivanka

Sisters Ivanka and Tiffany have supported their father throughout his campaign for president

Thumbs up: There were several points in the evening where the clan stood up to clap in support of speakers at the convention

All smiles: The siblings gave a standing ovation (above) to family friend Lynne Patton during her speech at the RNC Wednesday night

More pointing: There were other times where the family seemed less impressed. Above Donald Trump Jr., Donald Trump and Ivanka look on during the Republican National Convention at the Quicken Loans Arena

Support system: As Eric Trump took the stage, Vanessa Trump (left), Donald Trump Jr. (second left), U.S. Republican Presidential nominee Donald Trump (center), Ivanka (second right) and Tiffany (right) applaud

The majority of the audience appeared to share the Trump family's disgust and began yelling 'Trump, Trump Trump', shouting down pro-Cruz forces in the crowd

Cuccinelli, who was sitting next to Mrs Cruz, said he did not think anyone anticipated a problem.

'People in my own delegation started physically approaching and yelling at her,' he continued. 'The one that stuck with me was somebody pointing at her and yelling something about Goldman Sachs. 

'He'll deny yelling and he'll deny dancing on her and he did both of those things.' 

The man he identified indeed denied yelling at her.

'I don't think anybody expected him to endorse,' Cuccinelli said, defending Cruz's speech. 

'I mean I haven't endorsed him and I said I'm going to vote for him. He made the case for the decision on November 8.

'I mean he prosecuted Hillary Clinton. He hit Donald Trump's signature issue. Obviously supporting him. 

'And Ted talks in terms of drawing a picture and you reach your conclusions. I don't think this is inconsistent with that.'

There were also reports of Republicans being restrained to prevent them attacking Cruz after his speech divided the Convention.

Immediately recognizing the potential damage done, former Speaker Newt Gingrich of Georgia addressed the turmoil just minutes after Cruz left the stage in Cleveland to 'paraphrase' what Cruz had said earlier.

'Now, I think you misunderstood one paragraph that Ted Cruz, who is a superb orator, said,' Gingrich told the crowd. 

'And I just want to point it out to you. Ted Cruz said you can vote your conscience for anyone who will uphold the Constitution. In this election there is only one candidate who will uphold the Constitution.'

'So to paraphrase Ted Cruz, if you want to protect the Constitution of the United States, the only possible candidate this fall is the Trump-Pence Republican ticket. 

'That way we haves a Republican ticket to implement Republican principles in Washington,' Gingrich said – earning applause from the crowd for his retooled explanation.

As Cruz spoke, members of the New York delegation seated up front right in front of Cruz yelled 'We want Trump!'

'I appreciate the enthusiasm of the New York delegation,' Cruz said after halting his remarks for several seconds during the loud cheering.

THE BETTER RIVALS: EX-CANDIDATE SCOTT WALKER ENDORSES DONALD TRUMP -WHILE MARCO RUBIO SAYS 'THE TIME FOR FIGHTING IS OVER'

Contrary to Cruz, former presidential hopefuls Scott Walker and Marco Rubio chose to get behind Trump at last night's GOP convention

Walker used the rhetorical device 'America deserves better' to condemn Democrat Hillary Clinton again and again and officially put his weight behind Trump.

'A vote for anyone other than Donald Trump in November is a vote for Hillary Clinton,' Walker said.

Rubio basically filmed a 90-second attack ad for The Donald, before calling on his party to come together.

'After a long and spirited primary, the time for fighting each other is over,' Rubio said. 'It's time to come together and fight for a new direction for America.'

Sen. Marco Rubio (left) and Wisconsin Gov. Scott Walker (right) played good soldiers to Donald Trump at tonight's Republican National Convention, while ex-rival Sen. Ted Cruz didn't endorse The Donald onstage 

Full attention: Donald Trump's youngest daughter, Tiffany, watched the proceedings during the third day of the Republican National Convention in Ohio

Tiffany Trump (left), Vanessa Trump (second left), Donald Trump Jr (center), Eric Trump (second right) and Lara Trump were never short on applauding Wednesday evening

Well-timed: The family was all hands on deck showing their full support for The Donald

Happy: Vanessa Trump happily waves to the crowd as she stands next to her husband, Donald Trump Jr. His brother, Eric Trump claps next to him as his wife cheers along on his left side

Solidarity: The Trump family posed for a photo with a group of law enforcement officers in a show of solidarity in Cleveland on Wednesday

'HE WOULD PICK UP THE PHONE EVERY SINGLE TIME': IVANKA TRUMP TELLS SWEET STORY ABOUT CALLING DAD COLLECT EVERYDAY FROM A JANITOR'S CLOSET AT SCHOOL

Previewing what she's likely to say when she takes the Republican National Convention stage on Thursday night to introduce dad, Ivanka Trump sat down with CNN to speak to chat about growing up Trump.

The eldest daughter of Donald Trump, the Republican nominee, recalled sitting in a janitor's closet at school to call her father collect during recess.

'I was probably 10 years old and I called collect to the Trump Organization, which is hilarious,' she told CNN's Gloria Borger.

'And he would pick up the phone every single time,' she added.

'He's put me on speaker phone. It wasn't a long conversation. It didn't matter who was there,' she said.

Donald Trump's eldest daughter Ivanka Trump sat down with CNN tonight and told a sweet story about calling her dad at work 

Ivanka Trump also pressed that her father wasn't sexist or racist and said those comments were hurtful to her as a daughter, but she took comfort because she knows her father so well 

Sometimes it would be 'titans of industry,' Ivanka Trump said, or 'heads of countries.'

'He'd always take my call,' she said.

'He'd always tell everyone in the room how great a daughter I was and say cute things and ask me about a test I took,' she added.

Ivanka Trump told the journalist that the fact that her father would drop everything showed the kid of dad he was.

When Borger asked Ivanka Trump if her father would read her bedtime stories like a typical dad, Ivanka Trump explained that he was 'different.'

'He wasn't long on diaper-changing and things like that, but he, I think he was maybe a bit more traditional in that regard, but he was very accessible and very available,' Ivanka Trump said.

'I never questioned that my siblings and I were his top priority,' she added. 

People got on their feet and started yelling at each other when Cruz said: 'To those listening, please don't stay home in November.

'If you love our country and love your children as much as you do, stand and speak and vote your conscience vote for candidates up and down the ticket who you trust to defend our freedom to be faithful to the Constitution.'

'Conscience' voting is a code word in the hall, as pro-Cruz forces tried to change party rules to let delegates vote their own consciences and not back Trump.

When Cruz made his remarks, Trump was shown on a screen clapping behind Cruz, prompting boos from Cruz-backers and calls of 'Trump Trump Trump' from pro-Trump forces, a day after Trump became the GOP nominee.

Waiting game: Donald Trump Jr. (left) speaks with his wife Vanessa (second left) as he waits for his father to arrive for an event on the sidelines of the Republican National Convention. On the right, Ivanka Trump, second right, and her husband Jared Kushner, right, hold hands at the event

Unity: Trump and his family joined Indiana Governeo Mike Pence and his family at the Great Lakes Science Center in Cleveland prior to Wednesday evening's speeches

Strength in numbers: Both families sported smiles at the event Wednesday to cheer on Donald Trump and Mike Pence 

Cruz mentioned Trump's name early, as if to get it out of the way.

'I want to congratulate Donald Trump on winning the nomination last night,' Cruz said to applause. 

Cruz also took time in his remarks to tell the story of slain Dallas police officer Michael Smith, a former Army ranger who was gunned down by the Dallas sniper.

He said Smith 'weighs on my heart' because his daughter shared the name of Cruz's daughter, Caroline.

'The day her father was murdered, Caroline gave him a hug and kiss as he left for work,' Cruz told a crowd that grew quiet for his story. 'But as they parted, her dad asked her something he hadn't asked before: 'What if this is the last time you ever kiss or hug me?'

'Later, as she thought of her fallen father, and that last heartbreaking hug, Caroline broke down in tears,' Cruz continued. 'How could anything ever be OK again?' 

On Thursday, Cruz doubled down and reiterated that he would not be endorsing Trump.

'I am not in the habit of supporting people who attack my wife and attack my father,' Cruz said at a morning meeting in Cleveland.   

Prior to the convention starting Wednesday, a few snaps on social media show Lara flashing her pearly white smile. In one picture, she is seen grinning next to her husband and in another she's taking a selfie with family friend Lynne Patton. 

Happy: Lara Trump shared the above snap with her husband Eric Trump prior to the convention

Friends for life: Trump family friend and employee Lynne Patton shared the above photo with her good friend Lara to Instagram before the convention, where she gave a speech in support of her boss

ERIC TRUMP'S SPEECH IS BESET BY TECHNICAL PROBLEMS AS THE BIG SCREENS AROUND THE ARENA GO BLANK DURING HEARTFELT TRIBUTE TO HIS FATHER

Eric Trump's rousing tribute to his father at the Republican convention was beset by technical difficulties.

The real estate mogul's second eldest son said he loved the GOP nominee 'so, so, so, so much' after walking on stage at the Quicken Loans Arena on Wednesday night.

But the crowd ignored his gushing comments, and turned their attention to the broken TV screen behind him.

The big screens hanging over the arena also went black.

Eric Trump's rousing tribute to his father at the Republican convention was beset by technical difficulties. The big screen on stage was black for large parts of his speech 

So did the narrow screens that ring the arena – which had held a live feed of convention-related tweets.

Minutes later the entire surface of the 10-million pixel main screen turned black. But the teleprompters still worked.

'It is such an honor to be here for a man I love so, so, so, so much. That's my father,' he said.

He urged Republicans to 'vote for the one candidate who does not need this job' – his father.

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Vote for the candidate who has never received a paycheck from our government,' he said, to wild cheers.

'Vote for the candidate who can't be bought sold, purchased, bribed ... or steered from the path that is right and just and true.'

He also said his father could not bare to see the word 'Christmas' removed from public use - because of political correctness.

But the mood was largely one of quizzical confusion as delegates looked at each other to find out what was going on.

After the speech, his father tweeted: 'Great job! Proud of you!'

Eric had the difficult task of following Ted Cruz, who refused to endorse Trump during his speech.

Also earlier in the day, Ivanka previewed what she's likely to say when she takes the Republican National Convention stage Thursday night to introduce her father.

In an interview with CNN on Wednesday, she chatted about growing up Trump.The eldest daughter of Trump recalled sitting in a janitor's closet at school to call her father collect during recess.

'I was probably 10 years old and I called collect to the Trump Organization, which is hilarious,' she told CNN's Gloria Borger.

'And he would pick up the phone every single time,' she added.

'He's put me on speaker phone. It wasn't a long conversation. It didn't matter who was there,' she said.

Sometimes it would be 'titans of industry,' Ivanka Trump said, or 'heads of countries.'

'He'd always take my call,' she said.

'He'd always tell everyone in the room how great a daughter I was and say cute things and ask me about a test I took,' she added.

Ivanka told the journalist that the fact that her father would drop everything showed the kind of dad he was.

Also earlier in the day, Ivanka previewed what she's likely to say when she takes the Republican National Convention stage Thursday night to introduce her father. In an interview with CNN on Wednesday, she chatted about growing up Trump