Angelina Jolie And Brad Pitt Divorce: What's At Stake

Angelina Jolie and Brad Pitt may have made millions between them since marrying in 2014, but as the two negotiate the terms of their just-announced divorce, one expert says their biggest battle could end up being over children, not wealth. 

Jolie filed for divorce on Monday after separating from her husband September 15, according to court documents. In her filing, Jolie asked the court to grant her sole physical custody of the couple's six children, with visitation rights for Pitt, who would retain joint legal custody.

 "Children are a very precious commodity that money can't buy," celebrity divorce attorney Neal Hersh told CNN in an interview. "So of course if someone is saying they want to limit your time with the children and you disagree with that, that becomes an area of contention and a significant one often times."

The couple's children are Maddox, 15; Pax, 12; Zahara, 11; Shiloh, 10; and twins Knox and Vivienne, 8. It is not yet confirmed by either Jolie or Pitt's representatives if a prenuptial agreement was in place, but according to a Forbes estimate, the two have earned about $117.5 million since their 2014 marriage.

 Hersh, who has over 40 years of experience in family law, said if a prenup exists, it would be a "thorough" document that would orchestrate the division of property in the case of divorce, including respective and joint earnings.

 In California, however, such agreements are prohibited from addressing issues of child custody.

 "The issue here between these two folks -- if there's going to be an issue -- is going to have to be with the custody of their kids," he said.

 In her filing, Jolie does not ask for spousal or child support.