The baby is due in late summer, according to Extra.
Mario and Courtney, who was previously known as Courtney Mazza, were married in an outdoor ceremony in Mexico in December. The event was broadcast on TLC as Mario & Courtney's Wedding Fiesta, a two-hour special, later that month.
Mario, 39, and Courtney, 29, met in 2008 when he starred in Broadway's A Chorus Line musical, where she was a dancer, and got engaged in January 2012.
The couple are already the parents of a two-year-old daughter named Gia -- whose birth served as the basis of Mario Lopez: Saved By the Baby, a reality series which aired on VH1 in 2010 and followed Mario and Courtney as they prepared for the birth of their first child.
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