Oksana gave birth on Friday, a few weeks early but a source tells RadarOnline.com that everything went well and mom and daughter are doing just fine.

In fact, mom and the baby are already home!

It was RadarOnline.com that first uncovered Mel's affair with Oksana. We published a series of photos of the cozy couple in Costa Rica earlier this year, before the public had any idea that Mel's marriage was apparently kaput.

Go here for the full story, and photos of Mel and Oksana.

This is Mel Gibson's eighth child, and Oksana's first. Mel and his wife of 30 years, Robin, filed for divorce recently.

Below is a video clip from Oksana's new album: