Kate Moss will testify in Johnny Depp, Amber Heard trial

Johnny Depp's ex Kate Moss to testify in defamation trial following Amber Heard's 'stairs' remark

Amber Heard previously referenced "Kate Moss and stairs" as she testified about an alleged altercation.

Kate Moss is due to testify in Johnny Depp and Amber Heard's ongoing defamation suit.

A source close to Depp, 58, confirmed as per PEOPLE that the supermodel, 48, will appear in court via video chat on Wednesday in Fairfax, Virginia. 

Moss, Depp's ex-girlfriend, was mentioned by Heard, 36, earlier this month on the stand when addressing an alleged confrontation between Depp and Heard's sister, Whitney Henriquez.

According to the Aquaman 2 actress, Henriquez was "in the line of fire... trying to get Johnny to stop," which reminded her of a purported incident between Moss and Depp. "[Whitney's] back was to the staircase, and Johnny swings at her," Heard testified as per PEOPLE.