In Johnny Depp's defamation trial, Kate Moss delivered a stunning blow to Amber Heard.

A body language specialist highlighted the supermodel's behavior while telling Depp's lawyer Ben Chew about the night in 1994 in which Heard claimed and listened to reports that Depp shoved Moss down the stairs.

Moss had nothing but warmth on her face as she recounted her relationship with the "Pirates of the Caribbean" actor, according to Judi James, who talked to the Daily Mail.

The very secretive 48-year-old set aside her known aversion to give interviews on Wednesday to come to her ex-lover in court, taking the stand on his behalf and spat the truth in Heard's face by dismissing her accusations that the actor allegedly physically assaulted her.

James observed Moss's facial expressions and motions, revealing how she has warm sentiments for Depp while admitting that their split left her heartbroken for several years.

When questioned if she knew Depp, Kate Moss' facial motions suggested a lingering warmth, according to James.

When speaking over Chew and being stopped by him, she apparently gave the impression of being nice, smiled sweetly and humbly.

Moss stated that she tumbled down the steps due to the weather when they were in Jamaica. She shouted and hurt her back since she didn't know what had occurred.

Her then-boyfriend came coming to her aid, carrying her to the room and getting her medical assistance.

In response to the lawyer's queries, Moss admitted that Depp "never pushed, kicked, or shoved me down any steps," before finishing the testimony with a tiny giggle.

Despite earlier suggesting that she would have to become ill before appearing to the media, Kate Moss appeared serene and free of any symptoms of tension and anxiety during her whole testimony.

READ ALSO: Kate Moss SHATTERS Amber Heard's Lie About Johnny Depp Being Violent [WATCH]

Meanwhile, James saw how the "Aquaman" actress seemed and characterized her as "uncomfortable." The expert observed Heard, who was watching Moss on her screen, implying that the former was experiencing "denial or irrelevance."

She was observed with her chin up and her eyebrows furrowed as the model severely damaged her case with what she was saying.

Johnny Depp is suing his ex-wife Amber Heard for $50 million over a 2018 Washington Post piece revealing her domestic violence experience and claiming she is a survivor of domestic abuse.

While the actress did not mention Depp's name, his attorneys feel that the references to him were so obvious that it harmed his career and reputation.

Heard then launched a $100 million defamation countersuit.

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