Donald Trump, satin pyjamas and why you're seeing the Stormy Daniels everywhere again.

Stormy Daniels has described her 2006 encounter with Donald Trump in unflattering terms at his criminal trial, testifying she feared it would become public.

For several hours on Tuesday, the pornographic film star, 45, offered details on the witness stand about her encounter with Trump, 77, and the hush money deal she reached to stay quiet about it ahead of the 2016 presidential election he won.

She told jurors that her life descended into "chaos" after the arrangement was made public in 2018, saying she was ostracised and harassed at her home.

"Who do you understand Mr Trump to be referring to as horseface and sleazebag in this post?" prosecutor Susan Hoffinger asked her as she displayed a social media post by Trump.

"Me," Daniels replied.

Daniels' testimony provided fodder for Trump's lawyers to seek a mistrial, arguing that details, such as her statement that Trump did not wear a condom, served no purpose other than to inflame the jury. Justice Juan Merchan denied that request but agreed that some of her testimony ran too far afield.

Trump's lawyers attacked her credibility and grilled her about inconsistent statements she has made over the years about her time with Trump.

Trump did not react as he watched from the defence table. He has pleaded not guilty to charges of falsifying business records to cover up a $US130,000 ($A197,000) hush money payment to Daniels and denies having sex with her.

Donald Trump attending his trial for allegedly covering up hush money payments on May 7, 2024 in New York City. Image: Getty.

His legal team has suggested Daniels was angling for a spot on The Apprentice, the popular reality TV show then hosted by Trump.

Daniels confirmed that she hoped he would cast her following their encounter.

Daniels said Trump made sexual advances after inviting her to his hotel suite at a celebrity golf tournament in Lake Tahoe, Nevada. Daniels testified she grew up as the daughter of a low-income single mother.

She said Trump told her: "This is the only way you're getting out of the trailer park."

Daniels said she "blacked out" despite consuming no drugs or alcohol after Trump prevented her from leaving the room by blocking the door. She said she woke up on the bed with her clothes off.

"I was trying to think about anything other than what was happening there," Daniels testified.

Daniels, whose real name is Stephanie Clifford, said she did not tell Trump to stop. 

"I didn't say anything at all," she said. She said she left the hotel room quickly afterwards.

The Republican politician, who served as president from 2017 to 2021, says the trial is an attempt to hobble his attempt to win back the White House from Democratic President Joe Biden in the November 5 election.

Daniels said Trump greeted her at his hotel suite wearing satin pyjamas. 

She said she grew annoyed by Trump's frequent interruptions and asked him: "Are you always this arrogant and pompous?"

Trump then dared Daniels to spank him with a magazine and she obliged. 

"He was much more polite after that," she said. The former president denied the claims. 

The alleged encounter took place while Trump was married to his current wife Melania.

The case is widely seen as less consequential than three other criminal prosecutions Trump faces, but it is the only one certain to go to trial before the election.

The other cases charge Trump with trying to overturn his 2020 presidential defeat and mishandling classified documents after leaving office. Trump has pleaded not guilty to all three.

In Florida, where Trump is accused of illegally keeping classified documents, a judge decided to indefinitely postpone the trial on Tuesday, greatly reducing the odds he will face a jury in the two federal cases before the election. 

Feature image: Getty.