Oksana Grigorieva Has No Rights to Mel Gibson's FortuneMel Gibson's erstwhile lady Oksana Grigorieva "signed a cohabitation agreement that locked her out of securing a slice of the Oscar-winning director/actor's billion-dollar fortune," RadarOnline.com reports.

Grigorieva signed the contract while pregnant with Gibson's eighth child last year. Though the agreement includes provisions for the care of the couple's 8-month-old daughter, Lucia, there are no caveats for Oksana herself.

The Russian model and musician, 40, told London's Daily Mail in June, "He is not paying me a penny. Nothing. I am having to live on credit cards and borrowed money. It is not a good situation."

A source confirmed to Radar that despite the contract, Gibson, 54, has not supplied any financial support for the child (or Grigorieva) thus far into the split.