Actress Ginnifer Goodwin Announces Pregnancy

The Once Upon a Time actress is expecting her first child with her costar, fiancé Josh Dallas, her rep confirms to PEOPLE exclusively.

No further details, including the baby's due date, are available.

The Killing Kennedy star, 35, and Dallas, 31 — who play the parts of Snow White and Prince Charming on the hit show — first met on the series and went public with their romance in April 2012.