Jennifer Garner, Ben Affleck expecting third child

(CBS/AP) Another baby is on the way for actors Jennifer Garner and Ben Affleck.

The couple is expecting their third child, their reps confirmed to the Associated Press. The new addition joins big sisters Violet, 5, and Seraphina, 2.

Pictures: Celebrity baby bumps
Pictures: Ben Affleck
Pictures: Jennifer Garner

In a one-sentence statement, released Monday, the actors say they are "thrilled" for the new arrival. No other details were released.

Affleck and Garner, both 39, married in 2005.

Garner, who rose to fame after starring in the television series "Alias," appeared over the weekend at a Disney expo to promote her upcoming film, "The Odd Life of Timothy Green."

Affleck won an Oscar for co-writing the screenplay to "Good Will Hunting" and recently wrote, directed and starred in the thriller "The Town."