Ali Landry and husband Alejandro Monteverde welcome baby boy
Marcelo joins older sister Estela Ines, 4.
The 38-year-old former Miss USA says she survived morning sickness by eating grilled cheese sandwiches.
"I was definitely more nauseous --basically morning, noon, and night and eating horribly, like tons of carbs,' Landry told People in June. "Grilled cheese sandwiches, that was my thing."
Landry and Monteverde married in 2006, one year after Landry's marriage to "Extra" host Mario Lopez was annulled just two weeks after their wedding.