Mel Gibson's girlfriend Oksana Grigorieva has given birth to a baby girl, officially making Mel an Octo-dad. RadarOnline is exclusively reporting that Grigorieva gave birth to the couple's daughter on Oct. 30, which was a few weeks before her anticipated due date in December. No details, such as the baby's name or weight were given, but the report says both mom and the daughter are doing just fine.