This will be the couple's first child together, however it will be Tucci's fourth child. The 53-year-old actor was previously married to Kathryn Tucci, with whom he had three children. Kathryn passed away in 2009 after battling breast cancer.
In 2011, Tucci was introduced to Felicity, a literary agent, by his The Devil Wears Prada co-star and Felicity's sister, Emily Blunt. The two were married in the summer of 2012.
"I'm very excited to be a dad. It's incredible," Tucci told Us Weekly. "I'm most excited to have a baby with Felicity and for the baby to be healthy."