Who's Due Next?

We're counting down to the birth dates of the newest celebrity babies!

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JAMIE ANNE & MARSHALL ALLMAN

It's twins for the star of The Killing and her actor husband (known for his roles on True Blood and Prison Break), who will become first-time parents this spring. "Twins run in both of our families so we were prepared for the possibility," the couple, who married in 2006, tells PEOPLE.