After Amber Heard mentioned "Kate Moss and stairs" during their ongoing defamation trial, Johnny Depp's lawyers were spotted smiling and clapping their hands. Reports were referring to a rumor that Depp once threw Moss down a flight of stairs. 

The incident happened on Monday when Amber Heard rehashed an allegation about Johnny involving Kate during her court appearance. She claimed that when they were dating in the 1990s, Johnny pushed Kate down the stairs. Amber already claimed this in a British court lawsuit in 2020.

Amber first claimed that Johnny pushed Kate down the stairs during the trial of Johnny's failed lawsuit against The Sun for labelling him a 'wife-beater.' Amber had claimed at the time that she had heard from two sources that Johnny had shoved Kate down a stairwell while they were dating in the 1990s.

She said (via People), "[Whitney's] back was to the staircase, and Johnny swings at her. I don't hesitate, I don't wait — I just, in my head, instantly think of Kate Moss and stairs. And I swung at him. In all of my relationship to date with Johnny, I hadn't landed a blow. And I, for the first time, hit him, square in the face. And he didn't push my sister down the stairs.."

Depp's legal team said this story was complete fiction at a previous trial. They can now use it against the actress now that she has mentioned it.

A person close to Johnny Depp was quoted in the New York Post. "Amber mentioned an ex of Johnny's that clearly she felt was not supportive of him, which couldn't be further from the truth," the source said, apparently referencing Moss's potential to help Depp's case. 

According to the source, Johnny and his lawyer Benjamin Chew made the gesture as a 'celebratory acknowledgment.'

Legal experts think that Amber mentioning Kate here permits Johnny's team to call on the supermodel to contest the evidence, casting doubt on Amber's trustworthiness.

California entertainment lawyer Mitra Ahouraian told New York Post that Kate Moss is supposedly still connected with Johnny, and her evidence was previously barred due to its lack of relevance. 

"That's one mistake that [Amber] made, was bringing up Kate Moss, which potentially opened the door to [Johnny's team] bringing [Kate] on as an impeachment witness," Ahouraian said.

Geo.tv said Depp is suing the Aquaman actress for $50 million after she implied in a 2018 Washington Post op-ed that he attacked her. Even though she did not name him, he argues that her charges have harmed his capacity to work.

Both sides offered affirmations of confidence in the progress of the proceedings at the end of last week.

On May 16, Amber Heard will continue her testimony. The actress has already spoken openly about her tumultuous relationship with ex-husband Johnny Depp, including allegations of physical altercations.

 Johnny Depp steps outside court during the 8th day of his civil trial at Fairfax County Circuit Court Johnny Depp steps outside court during the 8th day of his civil trial at Fairfax County Circuit Court Getty Images | Paul Morigi