Mario Lopez has announced that he is having his second daughter with wife Courtney.

"I am the happiest father in the world," Lopez told Extra. "We cannot wait to welcome baby Lopez number two into our lives."

And what about Lopez baby number one? Lopez's two-year-old daughter Gia seems to be relishing her future big sister role, sporting a shirt with the words "big sister Gia" on Tuesday.

Lopez was so delighted he took to Twitter to praise his daughter.

"Congratulations Gia on your big news!!! You're gonna be an awesome big sister... @CourtneyMLopez & I are so proud."

Mario and Courtney Lopez got married back in December at "Girls Gone Wild" founder Joe Francis' $30 million Punta Mita estate in Mexico.

The wedding, which included celebrity guests like Eva Longoria, aired on TLC a few days later as "Mario & Courtney's Wedding Fiesta."

Earlier this week rumors swept across the Internet that Mario's "X Factor" co-host Khloe Kardashian is getting fired from the show. Lopez is reportedly staying on as a host.

A spokesperson for "X Factor wouldn't confirm or deny the rumor, telling the Daily Mail:

'The producers have not yet made the talent decisions for this year."