Ellen Pompeo tweet featuring Katherine Heigl sparks fan speculation about Izzie Stevens returning

‘Grey’s Anatomy’ Fans Think Ellen Pompeo Is Hinting At Katherine Heigl’s Return To The Show With New Tweet

Ellen Pompeo Posts 'Grey's Anatomy' GIF of Katherine Heigl, Sparking Fan Theories

Ellen Pompeo shares throwback GIF of herself and Katherine Heigl amid Isaiah Washington feud