Mario Lopez and his wife Courtney Mazza are expecting their second child.

“I am the happiest father in the world,” Lopez told “Extra”.

He added, “We cannot wait to welcome baby Lopez number two into our lives.”

Their baby is due late summer and will join big sis, 2-year-old Gia Francesca Lopez.

“Extra” aired a surprise baby shower with Gia holding a sign that read, “I’m gonna be a big sister.”

The couple dated for four years and wed in a beach wedding in Mexico in Dec. 2012