Mario Lopez and Courtney Mazza

Mario Lopez's wife Courtney gave birth to a baby boy on Monday evening.

"It's a boy!!!!!!!!!!!!!!" the Extra host announced on Twitter. "Please welcome Dominic Lopez to the world! Couldn't be happier... @CourtneyMLopez & baby are doing just fine... :)"

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An hour later, Mario was still rejoicing. "I am in heaven right now.... And in a bar.#CelebratingDominicLopez #BabyLopezNumber2," he tweeted.

Mario and Courtney, who married in December, are already parents to Gia Francesca, who turns 3 on Wednesday.