Moss was in a relationship with the Pirates of the Caribbean star from 1994 to 1998.
He appeared via video link at the hearing in Fairfax, Virginiaas she gave evidence in support of Depp and denied claims that he had ever assaulted her.
As she recounted a story where she accidentally fell down the stairs while on vacation in Jamaica, social media users were quick to praise the model’s voice.
‘Kate Moss should make audiobooks. She could listen to her pixie voice for hours,’ one fan said.
‘I’ve never heard her speak, her voice is heavenly,’ said another.
One person tweeted: ‘I can listen to her talk all day. Kate Moss has such a soothing voice!
Kate Moss testified that Depp did not push her down the stairs during a trip to Jamaica as he testified in the Pirates of the Caribbean star’s $50 million defamation lawsuit against his ex-wife Amber Heard.
One person added, “All these years since I was in high school I’ve been seeing her face among other supermodels and this is the first time I’ve heard her voice.”
Miss Moss told the hearing that Depp “never pushed me, kicked me or threw me down the stairs.”
Appearing from her Gloucestershire mansion, Miss Moss looked tense as she was sworn in as a witness, vowing to “tell the truth under penalty of law”.
And although his appearance lasted less than three minutes, it dealt a blow to the case of Depp’s ex-wife, Amber Heard.
The 58-year-old actor is suing Miss Heard for $50m (£40m) after she claimed in a newspaper that she was a survivor of domestic abuse. She countersued for $100 million, claiming that he destroyed her career by calling her a liar.
Actor Johnny Depp greets a supporter during a break in the trial at the Fairfax County Courthouse today. A defamation case brought by Depp against his ex-wife Amber Heard is in its final week
The 36-year-old Aquaman actress had previously told the jury in Virginia about a rumor that Miss Moss had been sent down the stairs when she and Depp were one of the most popular couples of the 1990s.
But the model, who was wearing a black jacket and white top, denied the incident during her testimony.
She said she slipped on a wet staircase while vacationing in Jamaica at the five-star GoldenEye resort, the former home of James Bond author Ian Fleming.
When asked what happened, he explained: “We were leaving the room and Johnny left the room before I did.” There had been a rain storm. Leaving the room I slipped down the stairs and hurt my back. I screamed because I didn’t know what had happened to me and I was in pain.
“He ran back to help me and took me to my room and got me medical attention.”
When asked if Depp pushed her down the stairs, Miss Moss said: ‘No.’
Depp’s lawyer, Benjamin Chew, investigated further, asking, “During the course of the relationship, did he ever push you down stairs?” Miss Moss replied: ‘No, she never pushed me, kicked me or threw me down the stairs.’
Although Ms. Heard initially raised the allegations, her legal team did not cross-examine and the model’s evidence soon ended.
Depp’s ex-wife, Amber Heard, 36, had previously told the jury in Virginia about a rumor that Miss Moss had been sent down the stairs when she and Depp were one of the most popular couples of the 1990s. .
She was a surprise witness for Depp during a stage of the trial known as rebuttal, where she was given the chance to question the accusations made by Miss Heard.
Yesterday, when the actor returned to the witness stand, the twice-married father of two said the incident had been misrepresented by his ex. He said: “There was never a time when I pushed Kate down the stairs, but she (Miss Heard) threw this up three times before.”
Recounting the incident, Depp said: “Very simply, we were in Jamaica. I got out of our bungalow about three minutes before she did. I was standing outside and the rain is starting to pour down like a monsoon.
“I remember seeing Kate walking out the door and there were three wooden steps. She slips, her legs come up, she lands on her lower back. She was obviously in physical pain: she was hurt, she was crying.
I ran over and grabbed her to make sure she was okay.
That’s it, that’s the whole story. never heard a rumor of that [pushing her down the stairs] before Miss Heard grabbed him.
Depp and Miss Moss dated from 1994 to 1997. The actor later blamed youth and stupidity for the breakup, saying he let his job interfere with their relationship.