The Fanning sisters, Dakota and Elle, have been cast in Cameron Diaz's new movie, My Sister's Keeper. The story is based on the book of the same name which is about a girl, played by Elle, who sues her parents for emancipation after she finds out she's been conceived as a genetic match for her sister, to help prolong her life because her sister, who will be played by Dakota, is dying of cancer. Cameron Diaz will play their mother.

The book was good but it was a bit depressing for me. I'm not going to spoil it for y'all but still. Don't read it unless you're on serious uppers.

Source