larterbabygirl.jpg Ali Larter and husband Hayes MacArthur welcomed a healthy baby boy on Monday morning in Los Angeles, her rep has confirmed.

Mother and child are both doing well, and the first time parents have named their son Theodore Hayes MacArthur. "He's our perfect Christmas present," Ali told Us Weekly.

Larter and MacArthur wed in Kennebunkport, Maine in August 2009 after a 7 year courtship, and the Heroes actress revealed that she was eager to start a family back in 2007, telling Cosmopolitan, "I told my boyfriend after three weeks that I wanted to marry him and that we could do it tomorrow...I look forward to that time when I'm home with babies."