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Sarah Wright Olsen, Eric Christian Olsen

Alberto E. Rodriguez/Getty Images

Baby on board!

NCIS: Los Angeles star Eric Christian Olsen, 38, and wife and actress Sarah Wright Olsen, 32, are expecting their second child.

Eric and his wife starred together on the series The Loop in 2006 and wed in 2012. The actress, also known for roles on shows such as Marry Me and Parks and Recreation, gave birth to their first child, son Wyatt Olivier, a year later.

Both actors recently announced via an Instagram photo that she is pregnant. The picture shows their boy touching his mother's baby bump.

"Deep talks with #littlebear And our new #littlelove due this summer," Sarah wrote. "#surprise #baby #when3becomes4 @ericcolsen."

"This picture is either one of two things: Wyatt fully embracing and loving his impending new baby sibling. Or he is trying to push them both down a steep embankment, in a last ditch effort to preserve sole ownership of his train set," Eric said

"#littlebitofperfect steep embankment joke written by @joeledgerton," he added, referring to his The Thing co-star.

Sarah also showcased her baby bump in a black dress while attending Swiss watch manufacturer OMEGA's celebration of the launch of the Master Chronometer Globemaster at Mack Sennett Studios in Los Angeles Tuesday.