#RIPTalia has been trending on Twitter as people remember the 13-year-old girl whose enthusiastic YouTube videos and attitude toward her cancer inspired people around the world.
Talia Joy Castellano lost her battle with cancer on Tuesday morning, according to a post on her Facebook fan page. According to The New York Daily News, the Orlando resident was fighting two forms of cancer -- neuroblastoma and leukemia.
Talia wanted to be "remembered as the bubbly girl who wanted to do something about childhood cancer," another Facebook post reads.
The little girl made appearances on The Ellen Degeneres Show and was also the face of Cover Girl.
Watch her appearance on Ellen below (Mobile users: http://youtu.be/a6r0Hu6nCKs):