Moment Amber Heard name-dropped Kate Moss leading to model's testimony

Footage shows the moment Amber Heard name-dropped Kate Moss, which in-turn, has led her to testify as part of the ongoing Johnny Depp trial.

"I just see my little sister with her back to the staircase and Johnny swings at her and I don't even wait," Heard says of an alleged altercation. "In my head I just instantly think of Kate Moss and the stairs and I swung at him."

She'd heard that Depp reportedly pushed Moss down the stairs when they dated in the 1990s - but the model has never confirmed.

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