The former Miss USA, who is already mother to three year-old Estela, is said to be expecting her second child with director Alejandro Monteverde.
"I found out on Valentine's Day and told my husband and daughter together, they were both so excited," Landry told Life & Style magazine. "I love being pregnant. Being a mum is just the best thing in the entire world."
Landry has been married to Monteverde since 2006 but is best known for her short-lived marriage to former Saved By The Bell star Mario Lopez.
Landy and Lopez wed in 2004 but the model had the marriage annulled only two weeks after the ceremony amid accusations of infidelity.
The former Eve star is expecting her second child in October.