It's a boy!!!!!!!!!!!!!! Please welcome Dominic Lopez to the world! Couldn't be happier... @CourtneyMLopez & baby are doing just fine... :)— Mario Lopez (@MarioLopezExtra) September 10, 2013
The 39-year-old was very vocal on the social media site leading up to his son's arrival -- admitting he had to rush from his duties as X Factor host straight to the hospital.
Whoa.. Cutting it close. Just wrapped @TheXFactorUSA & I'm rushing to the hospital. Baby Lopez #2 is coming tonight! Baby better wait for me— Mario Lopez (@MarioLopezExtra) September 10, 2013
Shortly after Dominic made his way into the world, Mario went out to celebrate at a local bar.