Kelly Clarkson and Amy Lee played around with the idea.
kelly & Florence have performed on the same stage, but not together.
Kelly loves Mariah & Beyonce
Mariah loves Beyonce & Kelly
Drake needs to hurry up and get a Beyonce & Mariah feature.
But, I guess, technically, Carrie Mariah and Beyonce did work together on "Just Stand Up!"
Cher | Kate Bush | Sia | Barbra Streisand | Lana Del Rey | Lady Gaga | Alanis Morissette | Marina and The Diamonds | M.I.A. | Tori Amos| Florence & The Machine | Ellie Goulding | Sinéad O'Connor | Erykah Badu | Natalia Kills |