In 2004, her personal life also made headlines when she started dating comedian and talk show host Ellen DeGeneres. The couple married in 2008 and are now one of Hollywood's most celebrated couples.
But before Portia found love and happiness, she says she spent years living a secret life. A closeted lesbian, Portia says she was terrified of being outed. She was also waging a vicious battle with anorexia and bulimia. At rock bottom, Portia starved herself to 82 pounds.
Now, Portia is coming forward about it all in her new book, Unbearable Lightness: A Story of Loss and Gain.