New developments continue to take place as Lori Loughlin's trial approaches regarding her alleged participation in the ongoing college admissions scam.

In 2019, both Loughlin and her husband, Mossimo Giannulli, were accused of paying William "Rick" Singer $500,000 so that their daughters, Olivia Jade and Isabella Rose, could go to the University of Southern California (USC). Following the accusations, they were each charged with mail and wire fraud, honest services mail and wire fraud, money laundering, and conspiracy to commit federal programs bribery.  

Now, as the "Fuller House" star begins preparing for her upcoming trial, she may have to face a new hurdle.

According to Us Weekly, a source revealed that Olivia Jade and Isabella Rose could be called to testify. The insider also stated that the "When Calls the Heart" star was told by her legal team that "the United States Attorney's Office will use her daughters as star witnesses in hopes of securing a conviction."

In response to the news, Loughlin reportedly "asked if there was anything that could be done to prevent the girls from testifying." However, the insider stated that she was informed that the only thing that could circumvent the potential step is if she decided to change her plea from not guilty to guilty. That is, they said, "the only solution."

Aside from being called as witnesses, some have also stated that they believe both Olivia and Isabella could potentially be charged as defendants for participating in the admissions scandal. For her part, Olivia made the choice to unexpectedly reappear prior to the trial, which has resulted in some criticism from both Loughlin and the public

READ: College Admissions Scandal Update: Lori Loughlin Could Go To Prison 'Earlier Than She Anticipated'

Previously, it was reported that Loughlin had been advised to face the "consequences" ahead of the upcoming trial. Additionally, it was also said that she could potentially receive a lesser sentence if she were to take certain steps. At this time, she has not taken any formal steps to do so as she reportedly believes her defense has a "secret weapon" that will prove her innocence.

Who Are Lori Loughlin's Kids? Isabella, Lori Loughlin and Olivia are pictured at the "Fuller House" premiere on Feb. 16, 2016, in Los Angeles. Photo: Emma McIntyre/Getty Images