Apparently Matthew McConaughey has a motto besides "Just Keep Livin'" -- "Just Keep Making Disgustingly Gorgeous Babies To Repopulate The Planet." The actor-slash-nude bongo enthusiast and his model wife Camila Alves are now proud parents for a third time.

Alves gave birth to their new daughter this morning (Dec. 28) at a hospital in Austin, Texas. Details are pretty scant (the little lady's name hasn't even been released yet), but you can bet they're stoked about it.

Sources told TMZ that McConaughey in particular looked pretty joyous -- and that he even put on some much-needed weight. (Remember him in 'Magic Mike?' Yeah, now he's more like Christian Bale in 'The Machinist.')

McConaughey and Alves first got together in 2006, but only just got hitched in June of this year. They're parents to son Levi, 4, and daughter Vida, 2.

Our best wishes and uncontrollable envy to the beauteous family. We're pretty thankful that they're spreading as much genetic material as they can around.