Photos: Whitney Houston: Stars react to singer’s death

“Heartbroken and in tears over the shocking death of my friend, the incomparable Ms. Whitney Houston ... My heartfelt condolences to Whitney’s family and to all her millions of fans throughout the world ... She will never be forgotten as one of the greatest voices to ever grace the earth.” -- Twitter
(Jo Hale / Getty Images)

Dolly Parton, Mariah Carey and more react to Whitney Houston’s death.