Just Stand Up 2 Cancer had a star-studded performance of “We Are the World"-like proportions on Friday night when 15 different divas sang the “Just Stand Up” single for the Stand Up to Cancer concert.

The artists who sung “Just Stand Up” included Mariah Carey, Beyonce, Mary J. Blige, Rihanna, Fergie, Sheryl Crow, Miley Cyrus, Melissa Etheridge, Ashanti, Natasha Bedingfield, Keyshia Cole, Ciara, Leona Lewis, LeAnn Rimes, and Carrie Underwood.

Implications - It's actually quite amazing that Just Stand Up 2 Cancer was able to assemble this kind of roster for a live concert. After all, with this many divas on stage, you'd expect cat fights to break out left and right.