Heard had pledged to donate the money to the two foundations but Depp's team has begun to donate the money directly in her name.
The 30-year old actress and her team say "Pirates of the Caribbean" star is trying to save taxes by directly donating the money to the charity. They have now called out the actor to double the donation, reported People magazine.
"Amber Heard appreciates Johnny Depp's novel interest in supporting two of her favourite charities, the ACLU for domestic violence and the Children's Hospital of Los Angeles. This is great and unexpected news.
The member said that anything less would be an attempt by Johnny's counsel, Laura Wasser and Patti Glaser, to reduce their client's true payment.
"The Danish Girl" actress was awarded USD 7 million in the couple's divorce settlement earlier this month after which she decided to donate all of the amount to her two favourite charities- the American Civil Liberties Union and Children's Hospital Los Angeles.
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