New mom Ali Larter had her young son, Theodore Hayes MacArthur, safely in his car seat yesterday while out in LA. She and husband Hayes MacArthur welcomed little Theodore on Dec. 22, just a few days before Christmas. Ali spent her last months of pregnancy meeting up with her girlfriends and staying in shape with yoga. She had to break from the routine to do some press for Resident Evil: Afterlife at Comic-Con, and in one subsequent interview she confirmed to Jimmy Fallon that she and Hayes were having a boy. Hayes, meanwhile, has been busy with both their new addition and his NBC show Perfect Couples. He was back to work earlier this month to chat about the program at the Winter TCA with his costars ahead of their debut last week — make sure to check out Buzz's guide to all the midseason shows!