"Womb to womb / To beating wing / I climbed out of the eternal / And into the shape of me," she wrote.

"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."

She added that the photo was taken by her "baby daddy," photographer Ethan DeLorenzo, who shared another photo of the mother-to-be.