The 31-year-old actress announced the news by posting a picture on in which she is wearing a floaty dress and Wellington boots and cradling a large baby bump.

She wrote in the caption, "Womb to womb, To beating wing, I climbed out of the eternal, And into the shape of me... Some words I wrote years ago when I was thinking about my own mother. And the woman she was when she had me. And the woman I was reaching to become. The shape your desires make out of you. The body you become to hold your dreams. It's with two feet firmly on the ground and a heart swelling in an ocean of love that I'd like to share the new shape I am becoming to hold the greatest dream of them all. #babybump #newparents."

She credits "my beautiful hearted baby daddy" Ethan DeLorenzo for taking the photograph, which was taken in the countryside.

DeLorenzo posts a similar photograph of Jena in the woods and adds, "My family. @jenamalone and my child to be."