Carly Simon mourns sisters, Lucy and Joanna, who died 1 day apart after both battled cancer USA TODAY Carly Simon's sisters die one day apart after battles with cancer: 'I am filled with sorrow' Fox News Carly Simon's Sisters, Composer Lucy Simon and Opera Singer Joanna Simon, Dead of Cancer a Day Apart Yahoo Entertainment Joanna Simon, acclaimed singer, TV correspondent, dies at 85 AOL Carly Simon pays tribute to her two sisters who died of cancer a day apart CNN View Full Coverage on Google News