Kylie Jenner alleges that Tyga claimed Blac Chyna slashed him with a knife

Kylie Jenner took the stand in court on Monday and made serious claims about Blac Chyna. Chyna is battling it out in court with the Kardashians over the $100 million defamation lawsuit she filed in 2017. 

Chyna, 33, claims a coup by the Kardashian clan was plotted against her, which led to the cancelation of her reality show, "Rob & Chyna," and a financial loss.

Jenner, 24, testified that her ex-boyfriend, Tyga, claimed that Blac Chyna slashed him with a knife, which left around a six-inch scar on his arm.

BLAC CHYNA V. KARDASHIANS: DEFAMATION TRIAL RESUMES, CHYNA DETAILS TUMULTUOUS RELATIONSHIP WITH EX-FIANCÉ ROB

Chyna’s attorney, Lynne Ciani, asked Jenner to demonstrate to the jury how long the scar was on her own arm.

KARDASHIAN TRIAL: KRIS JENNER CLAIMS BLAC CHYNA THREATENED TO KILL DAUGHTER KYLIE JENNER

Jenner, who dated the rapper for three years, claimed that during their relationship Tyga explained that Chyna had allegedly "abused alcohol and drugs" during their relationship, which led to the violent act. 

While on the stand, Jenner clarified that to her knowledge, Tyga never considered Chyna his fiancée. The two share a son together, King Cairo, 9.

Jenner pointed out Chyna’s alleged violent past to show why she was "a little bit concerned" when her brother, Rob Kardashian, started a relationship with the model. 

The "Kylie Cosmetics" founder noted to the jury that she and Tyga tried to warn Rob about Chyna’s alleged past, but he insisted that he was going to move forward with his relationship with Chyna.

KARDASHIAN LAWYER TEARS INTO BLAC CHYNA, ACCUSES HER OF WANTING TO BE ONE OF THEM: ‘SHE WANTED THAT NAME’

Jenner noted that she didn’t know if Rob’s decision to stay with Chyna was because she was already pregnant with their daughter, Dream, now 5, or not. 

Following a lunch break, Jenner did not return to the stand as Jeff Olde, a former executive vice president of development and programming for E!, was called as an out-of-order witness.

During his testimony into the non-pickup of "Rob & Chyna" for its second cycle, Olde – who has since left the network – said from his home in Palm Springs, California that the show’s ratings were "promising" and that he had actually recommended to NBC Universal for it to move forward with its second season.

However, in December 2016, Olde received an email from Kylie – with her sister, Khloe Kardashian copied – in which Kylie expressed that after speaking with producers at Bunim Murray, "[Kylie] feel very strongly about canceling season 2 of "Rob & Chyna." Kylie also wrote, "the show is giving this toxic woman money."

The emails between Kylie and Olde also revealed that Kylie offered to film extra content for E! in exchange for the network "canceling" the second season of "Rob & Chyna."

"Filming isn’t my favorite, but I will sacrifice and film extra episodes and stories," Kylie wrote to Olde. Shortly afterward, E! would release a sizzle reel for "Life of Kylie," which was a spinoff of "Keeping Up with the Kardashians" centered on Kylie's life.

KARDASHIANS VS. BLAC CHYNA: COULD FAMOUS FAMILY'S NAME HURT THEM IN TRIAL? BRAND EXPERTS WEIGH IN

The show premiered in 2017. While Olde said on the stand that he doesn’t "normally take direction from 17-year-olds," he cautioned the Kardashian sisters for "emotionally overreacting" to the swirling headlines that Rob and Chyna were at odds in their personal lives. In those emails exchanges, Khloe also tells Olde that Rob and Chyna are both "tarnishing" the "Kardashian legacy" with what the couple was going through publicly.

"The sisters are clearly concerned for the credibility of the brand," Khloe's email reads in part.

Olde further testified that on Jan. 4, 2017, he visited Kris Jenner’s home for a meeting regarding next steps for "Keeping Up with the Kardashians" in which "Rob & Chyna" was also discussed briefly. Olde said he would make the trip to Jenner’s home about seven or eight times a year, adding, "We did all of our meetings at Kris Jenner’s home around the dining table."

Furthermore, in continued email correspondence with the Kardashian sisters revealed in court, Olde writes that he is "not sure how we do the show if the family is truly against it," and suggested that the Rob and Chyna relationship storyline be "folded into the mothership."

KRIS JENNER TEARFUL IN TESTIMONY ABOUT BLAC CHYNA, ROB KARDASHIAN’S ALTERCATION, CLAIMS SHOW WASN’T CANCELED

Questioned by Ciani about what he meant by the "mothership," Olde maintained he was "keeping an open mind" about what to do with Rob and Chyna’s involvement moving forward and that "mothership" obviously meant "Keeping Up with the Kardashians."

"I didn’t want a season 2 based on where their relationship was at the time," Olde explained of his position regarding the show.

In the same email chain with Kylie and Khloe, Kylie wrote to the executive regarding Chyna, "The only reason [Chyna] wants to be with my brother is for this show," adding, "she does not love him."

Meanwhile, in later emails to Chyna’s talent representative Lance Klein of William Morris Endeavor (WME), Olde wrote to Klein that "if ‘Rob & Chyna’ season 2 does not move forward, it would be because the family did not want it to move forward" and that the family allegedly feared Chyna would "blast" the family on another network if she was given the opportunity for another show.

'THE KARDASHIANS' PREMIERES: 5 THINGS WE LEARNED FROM THE NEW HULU SERIES

Olde went on to explain that from the network’s perspective, they did not want the entire "Rob & Chyna" second cycle to be the pair heading to couple’s counseling as the storyline would have been too dark and "depressing" for its audience.

He pressed that in their estimation, the healthy way for Chyna and Rob to remain was to have the couple go to counseling and that if "all goes well" he was leaving the door open for the series to continue.

Khloe gave a head nod in court following Olde’s response.

With Kylie back on the witness stand after Olde was dismissed, Ciani asked her about alleged text messages she received from Chyna in which Chyna allegedly made physical threats.

Despite the schism, Jenner said she and Chyna carried on an "OK" relationship, adding, "I wanted to be cool with Chyna because I had spent a lot of time with her son."

Jenner said she woke up to "a bunch of devil emojis" on an old phone Kylie no longer has but told Ciani she took the texts as "empty threats because I figured she was high because I got the texts really early in the morning."

Jenner further relayed from the witness stand that she was remembered "being upset" when she learned that Rob had become engaged to Chyna "because we found out through the internet."

"I was really happy for my brother – at the same time I was curious how things would go with Chyna," Jenner added when asked by Ciani her reaction to news that Chyna was pregnant with her niece, Dream.

The Kardashian's mother, Kris Jenner, took the stand last week and testified about having knowledge of Chyna's alleged attack on Tyga.

CLICK HERE TO SIGN UP FOR OUR ENTERTAINMENT NEWSLETTER

Kris’ testimony took two days and on the second day, the "momager" fought back tears when she recalled Chyna’s alleged violent outburst with Rob.

On Friday, Kris couldn’t hold back her anguish at reliving the ordeal. She claimed she was told Chyna put a gun to Rob’s head and "tried to murder my son" by strangulation with an iPhone cord.  

Chyna’s attorney, Lynne Ciani, asked Jenner why she did not call Chyna after speaking with Kardashian about the exes’ fight on Dec. 14, 2016.

"She [Chyna] tried to put a gun to his [Rob’s] head," the momager, 66, alleged on the stand, her voice cracking as she fought back tears. "My daughter Kim, 60 days prior, was duct-taped, put in a tub, robbed at gunpoint in Paris. I was traumatized by this. My daughter was almost killed."

"Chyna said it was a joke … the gun pulled on my son’s head was a joke. … I was traumatized … and it’s not a joke," Jenner continued, her attention fixed on her former future daughter-in-law.

CLICK HERE TO GET THE FOX NEWS APP

"I’m a mom, and my responsibility is to take care of everyone. We didn’t put Chyna on the show — put her in a home with all these beautiful decorations — so we can take it away. Why would we do that?" Jenner wondered. "This is now blowing up, and I was so hopeful that this was going to be OK. So to answer your question, that’s why I didn’t call Chyna."

Friday’s court proceedings ended much earlier than expected after Chyna’s attorney called for a sidebar meeting with the Kardashian’s attorney, Michael Rhodes, and Judge Gregory W. Alarcon in his chambers.

A rep for Khloe Kardashian and Kylie Jenner did not immediately respond to Fox News' request for comment.