Robert De Niro’s Estranged Wife Wants HALF Of His $500M

Robert De Niro's estranged wife is demanding half of his “$500 million” fortune — despite a 2004 prenup that his side insists limits her to a $6 million apartment, $500,000 cash and $1 million a year in alimony.

The “Raging Bull” star’s soon-to-be ex Grace Hightower made her demands Thursday in Manhattan Supreme Court, where the two sat through another in a series of contentious hearings in their ongoing divorce.

The pair — who first married in 1997 and divorced in 1999 — are arguing over the wording of the prenup they signed when they remarried in 2004.

The two are far apart on that wording.

De Niro contends that the prenup sets strict limits on her take in a divorce.

Hightower is solely entitled to $6.5 million in cash and property, his side contends, plus annual alimony of $1 million and half the value of a second apartment.

But her attorneys insists the prenup’s language additionally entitles her to half of what the “Goodfellas” star has made during the remarriage.

The bulk of that half-billion-dollar fortune comes from his movies and his lucrative stake in the Nobu sushi chain.

She also believes she’s entitled to an additional 50 percent of what he earned from his share in Tribeca Grill, the 88-room Greenwich Hotel and Canal Productions.

De Niro’s lawyer is meanwhile complaining that Hightower’s side is nickel-and-diming the actor for every penny of his fortune.