Liv Tyler had her baby! The Leftovers star and her boyfriend, sports manager/agent David Gardner, have welcomed their new addition, according to People Celebrity Moms & Babies. "He's healthy and everyone is very happy," her rep told the magazine; a source added that the baby arrived six weeks early and will need to stay in the hospital for a bit. This is the second child for Tyler, who is already mom to 10-year-old son Milo from a previous marriage. Congrats to Liv and David!