Diablo Cody

Juno screenwriter Diablo Cody is expecting her first child.

The Oscar winner, 31, announced the happy news via Twitter. "Thanks for the congrats on my fetus! No secrets here; just thought it would be fun to see how big I could get before someone noticed," she wrote.

Diablo Cody adaptating Sweet Valley High books for the big screen

Cody, whose real name is Brook Busey, married Dan Maurio last summer. The creator of Showtime's United States of Tara, Cody is currently working on a film adaptation of the book series Sweet Valley High.