Celebrities that have dealt with cancer personally

Hi, im trying to find musicians that may have been affected by Cancer, and specifically Breast Cancer. 

Is there a musician who has directly been affected (I know about Sheryl Crow and Melissa Etheridge), someone who beat it, or who lost a mother, sister, etc.  I am trying to put together an inspirational montage about cancer survivors and recognizable artisit who have dealt with and have advocated about breast cancer.

 Any help would be enormously appreciated.