Talia Joy Castellano was diagnosed with neuroblastoma six years ago, and leukaemia last year.
Talia claimed that "make-up is my wig".
This was posted on facebook when she died:
"It is with a heavy heart that we share with all of you that Talia has earned her wings at 11:22am. Please lift her beautiful soul, her beautiful light to heaven and please send your love and prayers to her family during this most difficult time. God speed little one, may you be free from pain and suffering, may your soul feel the light and love that you brought to so many of us on this Earth during the short time you were her with us. We will miss you more than you will ever know baby girl."
Talia is a very unique and special girl who didn't let cancer take over her life. She made the most of her life and she inspired so many people.
Throughout her fight with cancer, Talia found joy in make-up, playing with eyeshadows and nail polish from her hospital bed and posting tutorials for her 70,000 followers on YouTube.
Her vlogging was so popular that make-up brand CoverGirl made her an honorary ambassador earlier this year.
teen-i-am: we will all miss Talia and we wish her the best. She will always remain in our hearts and now that she found her wings she will no longer suffer.The whole world sends her love, R.I.P beautiful Talia.