"United States of Tara" has been renewed for a second season, it was announced Tuesday by Showtime President of Entertainment Robert Greenblatt.

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Executive produced by Steven Spielberg, created by Diablo Cody and starring Academy Award-nominated actress Toni Collette, "Tara" is about a wife and mother struggling with dissociative identity disorder and the effect it has on her family.

The second season of the show, which also stars John Corbett and Rosemarie DeWitt, is to start production this summer. It is expected to be on the network with 12 new episodes in early 2010.

"It has been pure pleasure working with Diablo Cody, Toni Collette, Steven Spielberg and everyone at Dreamworks on 'United States of Tara," Greenblatt said in a statement. "This is a perfect fit for our premium brand and we're thrilled that critics and audiences have responded to this groundbreaking show so well. I look forward to many more alternate personalities emerging from this unique series."