Kim Kardashian testified Tuesday that she had no memory of making any attempt to kill the reality show that starred her brother Rob Kardashian and his then-fiancée Blac Chyna. But she acknowledged demanding that Chyna be kept off of “Keeping Up With the Kardashians” after hearing Chyna had abused her brother.

“I will not go into a toxic work environment,” Kardashian said of her refusal to work with Chyna. “On my own show, I have the power to do that.”

Kardashian took the stand for an hour in a Los Angeles courtroom in a civil trial in which Chyna alleges that Kardashian and three other members of her family defamed Chyna and convinced producers and the E! network to cancel the spinoff show, “Rob & Chyna.”

Her testimony was mostly unremarkable — she spent much of it saying “I don’t remember” — but as the biggest star by far to testify in a trial full of stars, she caused a stir when she walked from the gallery to the witness stand wearing a dark gray pinstriped suit with white sneakers. The moment she stepped down, several reporters dashed from the courtroom to file stories.

Chyna’s attorney Lynne Ciani showed Kardashian a series of text messages from late 2016 and early 2017 with Kardashian’s name attached.