Liberty Grace Lawrence weighed in at 6 lbs., 8 oz, the actor's rep tells PEOPLE. Liberty joins big sister Charleston, 3 ½.
The couple announced the pregnancy in November, sharing the baby's name at the same time. In explaining their choices, Lawrence, 33, remarked that “Liberty is something I’ve always loved,” while Grace is in honor of his grandmother, who passed away last year.
Yawn-Nelson's due date had been Apr. 3.