06/18/2009 05:12 am ET Updated May 25, 2011

Oksana Grigorieva Definitely Pregnant With Mel Gibson's Baby: TMZ

We've learned Mel Gibson's girlfriend, Oksana Grigorieva, is pregnant with his child.

Our sources say Gibson has already told his estranged wife, Robyn, and their children about the news. We're told Oksana is in her second trimester.

Read more on tmz.com