Natalie Portman is the latest Hollywood star to swap the big screen for television.

The Academy Award-winning actress has signed a deal to headline in and exec-produce the miniseries We Are All Completely Beside Ourselves, which is currently in development at HBO.

The 35-year-old will star as Rosemary Cooke, a college student who had a rather unusual childhood which included her 'twin sister' disappearing at the age of five.

The miniseries - an adaptation of the Karen Joy Fowler novel of the same name - is being developed by Friends co-creator Marta Kauffman (Grace and Frankie) through her production company Okay Gooodnight.