Coming soon: A new baby for Carey Mulligan and Marcus Mumford!

Mulligan and Mumford are expecting their first child together, according to Us Weekly. The couple has not officially confirmed the pregnancy. The new baby will be the first child for both parents.

The Oscar-nominated actress will soon finish her run in the Broadway play, "Skylight," which won Best Revival Play at Sunday's Tony Awards. For her part, Mulligan received a nomination for Best Performance for an Actress in a Leading Role but ultimately lost out to Helen Mirren.

"They weren't planning on announcing, but she hasn't stopped working. Everybody around her is being very supportive. The show ends soon and they're going back to England after," a source told Us Weekly.

Mumford is touring with his band Mumford & Sons. They kick off a European leg later this month before landing back in England by August.

The couple tied the knot in April 2012 in Somerset, England. The 30-year-old actress and the 28-year-old rocker were once childhood pen pals growing up in London.

Mulligan tries to keep her marriage as private as possible, telling Vogue in April, "Marcus is the only thing that's mine that I can keep totally away, so I try to."