Prosecutors and staff from the Manhattan district attorney's office have arrived in court.

Prosecutors Joshua Steinglass, Becky Mangold and Christopher Conroy are seated at counsel table.

Manhattan District Attorney Alvin Bragg is not present in court this morning.

Michael Cohen, the prosecution's star witness in Donald Trump's hush money trial, is expected to take the stand Monday, according to multiple sources familiar with the case.

Trump's former attorney and "fixer," Cohen made the $130,000 payment to Stormy Daniels that sits at the center of the case, in order to buy her silence and help Trump's electoral prospects in the 2016 presidential election.

Prosecutors accuse of Trump falsifying business records when he repaid Cohen the $130,000.

Former Trump White House aide Madeleine Westerhout is set to resume her testimony this morning in former President Donald Trump's New York criminal trial.

For prosecutors, Westerhout's testimony yesterday offered a detailed picture of how Trump approached his personal finances while serving as president -- including how he signed personal checks for his then-attorney Michael Cohen and others.

Defense attorneys, meanwhile, appeared to use Westerhout to highlight Trump's character following hours of abrasive testimony from Stormy Daniels.

"He never once made me feel like I didn't deserve that job and I didn't belong there, especially in an office filled with older men," Westerhout told jurors about working by Trump's side for over two years. "He was a really good boss. I hope he respected me in my job, and I just found him very enjoyable to work for."

Westerhout at one point broke down in tears on the witness stand while recounting to the jury how she lost her job after she shared private details of Trump's family with reporters at an off-the-record dinner.

"That mistake, eventually -- ultimately, cost me my job, and I am very regretful of my youthful indiscretion," Westerhout said while crying.

Judge Juan Merchan dismissed court for the day following the late hearing.

Trump, speaking to reporters on his way out of the courtroom, railed against the judge.

"Everybody saw what happened today -- I don't think we have to do any expert explaining," Trump said. "I'm not allowed to anyway because this judge is corrupt," he said, criticizing Merchan -- who is not protected by the limited gag order in the case.

"I got to get back on the campaign trail. I'm not supposed to be here. We are so innocent," Trump said.

-ABC News' Kelsey Walsh and Mike Pappano

Judge Merchan communicated a bit of a warning to Michael Cohen ahead of his planned testimony next week, telling prosecutors to ask him to stop talking about the case after Trump's team brought up his continued out-of-court statements.

"I would direct the people to communicate to Mr. Cohen that the judge is asking him to refrain from making any more statements about this case," Merchan said.

"That comes from the bench and you are communicating that on behalf of the bench," said the judge.

Merchan's rebuke came after defense attorney Todd Blanche brought up recent statements by Cohen, including his appearing on TikTok this week wearing a shirt with a photo of Trump behind bars.

"It's becoming a problem every single day that President Trump is not allowed to respond to this witness," Blanche urged. "He has stated on social media that he is going to stop talking, and he doesn't," Blanche said of Cohen.

Prosecutors said they had already "repeatedly" asked Cohen and others not to post about the case, but claimed they had no control over the witnesses.

Trump, at the defense table, grinned broadly during the exchange regarding Cohen and his behavior on social media. But he shook his head and looked at Blanche, seemingly in disbelief, when Merchan -- instead of ordering Cohen to stop -- merely asked prosecutors to speak to him.

Court was subsequently adjourned for the week.