This week was a big one for two celebrity families that welcomed home a baby boy. 

Michelle Monaghan and her husband Peter White "have welcomed their second child to the world" Monaghan's reps told PEOPLE.

Monaghan gave birth to Tommy Francis White on Wednesday Oct. 30. She and Peter, who have been married since 2005, also have Willow Kathrine together. She'll turn five on Nov. 5.

Monaghan confirmed her pregnancy in June and said, "

Also celebrating a newborn baby boy is Girl Next Door actor Emile Hirsch, 28, who is now a dad to a baby boy, Valor. 

An insider told E! News, "The baby was born at a Florida hospital on Sunday, Oct. 27. It is a boy. His name is Valor and he was six pounds and two ounces. He is a beautiful, healthy baby boy. Everyone is so excited and happy...Emile showed up after the baby was born and he is spending time bonding with his new child." 

Hirsch met Valor's mother at an Oscar party and "had a short fling." 

A number of other celebrities have a bun in the oven! Check out more pregnant A-Listers: