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It's a Baby Boy for Robert Downey Jr.!

The actor and wife Susan Downey welcomed a baby named Exton Elias! Plus, see more stars who welcomed new bundles of joy (191 Photos)

Ali Gray on Feb 7, 2012 at 1:26PM

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Kimberly Williams & Brad Paisley

Arrival date: April 17
It's... a boy! The son to the According to Jim actress and country star is Jasper Warren.
And baby makes... four. The new baby joins older brother, William Huckleberry.
Birth announcement: "I never had [a sibling]," Paisley had told PEOPLE last year. "I think [Huck] will be a great big brother. He'll learn to share, which is something I never did!"