Beyonce Sends Heartfelt Message to Backup Singer Fighting Cancer

Queen Bey is hoping for the best.

The “XO” singer wrote a sweet message to her backup singer Tiffany Monique Riddick as she battles cancer. Riddick has worked on tour with Beyoncé since 2007, and has also taken the stage with Kelly Clarkson, Christina Aguilera and Mariah Carey. Read what she had to say on Us Weekly…