Amber Heard has called on Johnny Depp to double the $7m (€6.2) he plans to donate to charity in her name to avoid claims his lawyers are seeking to reduce his divorce payment.
Depp agreed to pay his estranged wife the sum as part of their divorce settlement, which she pledged to donate to a domestic violence charity and the Children's Hospital of Los Angeles.
The Pirates of the Caribbean star released a statement saying he had paid the first instalments to the charities himself "in the name of Amber Heard".
Heard's legal team responded by claiming Depp's decision to pay the charities directly meant he must donate $14m to account for tax deductions.
A spokeswoman for Heard said: "Amber Heard appreciates Johnny Depp's novel interest in supporting two of her favourite charities, the American Civil Liberties Union for domestic violence and the Children's Hospital of Los Angeles. This is great and unexpected news.
"However, if Johnny wishes to change the settlement agreement, we must insist that he honour the full amount by don- ating $14m to charity, which, after accounting for his tax deduction, is equal to his $7m payment obligation to Amber.
"We would also insist that the full amount be paid immediately and not drawn out over many years.
"Anything less would be a transparent attempt by Johnny's counsel to reduce their client's true payment by half under the guise of new-found concern for charities that he has never previously supported."
Depp (53) and Heard (30) resolved their acrimonious div-orce earlier this month, the day before a high-profile court hearing was due to take place in Los Angeles.
The pair married in February last year after meeting on the set of 2011 film The Rum Diary.