In very sad news today, Talia Joy Castellano, the 13-year-old CoverGirl and YouTube beauty guru tragically died after her 7-year battle with cancer on July 16.The teen was suffering from a form of nerve cancer called neuroblastoma for more than seven years before she passed away this morning.  After appearing on ‘Ellen,’ Talia Joy was admired for her love of all things beauty, and her inspirational outlook on life. She inspired her adoring fans through her Instagram and Twitter accounts.