By Breaking Celebrity News Staff

A 13-year-old cancer sufferer has become the honorary face of Cover Girl after her inspirational online make-up video made her a YouTube star.

Talia Joy Castellano, who is battling both leukemia and a brain tumor, has attracted more than 14 million viewers to her video blog and the cosmetics giant recently launched their new campaign and released the first image of the beautiful, brave teen.

Talia, who may only have another four months to live, became obsessed with make-up six years ago, when she was first diagnosed with the stage four neuroblastoma cancer. The seventh grader says that she uses make-up because she doesn’t like wearing wigs and wants to draw attention to her facial features instead of her baldness.

Her YouTube channel is an Internet sensation. Once a week, after enduring punishing bouts of chemotherapy, radiotherapy, stem cell transplants and blood transfusions, Talia teaches her followers a range of fun and creative make-up techniques.

Talia was shown the Cover Girl campaign poster while appearing recently on Ellen and combined with the standing ovation she received, the brave Tween’s eyes welled up with tears.

Speaking on one of her videos, Talia said: “I don't like wigs, they're so, I dunno... When I have on a wig I feel, not fake, just not me.

“When I put on my make-up I feel like I can embrace those features that I really like about myself. I feel if someone's looking at me