According to People.com, Julianna's mom has this message playing on her outgoing answering machine message: "A beautiful baby boy has been born to us. All is well. His name is Kieran Lindsay Lieberthal. Is that poetry? Do a little dance. Love this day! All is well. God bless! Can't wait to hear from you."
It's pretty obvious this grandma has gone ga-ga. Congrats!