'In Plain Sight' star Mary McCormack is expecting a baby, both in real life and on the small screen.

According to PEOPLE, the actress and her husband, Michael Morris, will welcome their third child this year. The new addition will join big sisters Margaret, 6, and Rose, 3.

McCormack, 42, plays WITSEC Marshall Shannon on the hit USA Network show, and revealed her character will be pregnant on the small screen as well.

"The upside of being knocked up along with my character -- no need for stunt boobs," she said about her character's pregnancy.

In addition to 'In Plain Sight,' McCormack has been seen on 'The West Wing' and 'Murder One.'