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  (PHOTO/Adrienne Maloof) Twitter: @AdrienneMaloof
  Paul Nassif and Adrienne Maloof (center) with former "Real Housewives of New York" stars Jill Zarin (L) and her husband Bobby (R)

Adrienne Maloof is reportedly seeking primary custody of her and husband Dr. Paul Nassif's three children. On Monday the "Real Housewife of Beverly Hills" star confirmed reports that she and Nassif are headed for a divorce just hours before Nassif filed for a legal separation. On Tuesday, it was suggested that the 50-year-old is preparing for what could potentially become a bitter divorce battle.

"Adrienne is going to fight Paul for full legal custody of the kids. She wants primary physical custody," a source close to Maloof reportedly told RadarOnline.com. "She says she is the parent who is with the kids the most, and she will do everything she can to keep them. She believes this is what is best for them."

Maloof, who was born in to the prominent and wealthy Maloof family, is co-owner of the various business holdings of Maloof Companies, including the Palms Casino Resort in Las Vegas and the Sacramento Kings basketball team.

New reports suggest that although the estranged couple allegedly has a prenuptial agreement, Maloof expects that Nassif, a renowned Beverly Hills plastic surgeon, will go after her fortune during the divorce battle.

"[Adrienne] thinks Paul will try and go after her money but their prenup is ironclad. She said Paul will not get any of the Maloof family fortune," the source said.

"She isn't afraid to battle it out in court with Paul for her family and kids. They are the most important thing to her and she's not going to give up or give in to him," the source added.

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It is unclear why exactly the pair has separated and while rumors of an open marriage continue to swirl, one source claims that it was actually a lack of intimacy in general which caused the marriage to crumble.

"Things have not been good between them for a while. [Paul] says they haven't had sex for ages," a friend of Nassif's allegedly told Star Magazine, adding that "they just try to have very little to do with each other."