Congratulations are in order for Hawaii 5-0 star Alex O'Loughlin and his partner, Malia Jones, who welcomed their son to the world on Thursday.

Their baby boy isn't the first child for both parents, who went public with their relationship in November. O'Loughlin has 15 year-old Saxon from a previous partner; Jones' first son, three year-old Spike, is also from a former relationship.

No word yet as to their son's name (although I'm sure some Hawaii 5-0 fans are secretly wishing that he goes with Danno).

O'Loughlin is currently filming season three of the reboot of the 70's cop drama of the same name. Jones is a surfer and model who has appeared in Esquire and Sports Illustrated.