The couple have been locked in a divorce battle since December 2018. Initially the pair fought over custody of their nine-year-old child but now the arguments are over money and property.
Hightower's average monthly spend was $215,000 a month on credit cards and $160,000 cash all of which De Niro's attorney, Caroline Krauss, claims the actor is running out of money.
She said the coronavirus pandemic led to a drying up of work projects for the Hollywood star. Months earlier, De Niro earned $5 million for acting in Martin Scorsese's hit gangster flick, The Irishman.
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