EXCLUSIVE: Shannen Doherty Opens Up to ET About Her Breast Cancer Battle

More from Entertainment Tonight: http://bit.ly/1xTQtvw Part 1: https://youtu.be/TNUVdAENmWU Part 2: https://youtu.be/c_d7J6-i2Hw Part 3: https://youtu.be/fCfOuroqDUc Starting Monday, the actress sits down with ET to talk about the fight of her life. Check your local listings for "Entertainment Tonight" on TV: http://www.etonline.com/showfinder/