Lady Gaga: "When I wrote Born This Way I imagined Whitney singing it because I wasn't secure enough to be a star."
Jennifer Lopez: "Such a loss. One of the greatest voices of our time. Sending out prayers to her family... #R.I.P.Whitney."
Toni Braxton: "She's paved the way for every single singer in the music industry. Iconic, legendary, innovating, amazing, humble...1 the best in the world."
Mariah Carey: "She will never be forgotten as one of the greatest voices to ever grace the earth."
Goldie Hawn: "I am so very sad to hear of Whitney Houston's passing. She was one of our great artist that graced us all. May she rest in peace."
Justin Bieber: "just heard the news. so crazy. One of the GREATEST VOICES EVER just passed. RIP Whitney Houston. My prayers go out to her friends and family"
Wyclef Jean: "The voice of an Angel, the Heart of a Lamb, the spirit of a Lioness, the presence of a Goddess, love you R.I.P Whitney Houston."
Bruno Mars: "This is terrible news..I'm sick to my stomach. Nobody sang like Whitney"
Rihanna: "No words! Just tears #DearWhitney. I honestly can't think of anything else!!!"
Tony Bennett: "Whitney Houston was the greatest singer I've ever heard and she will be truly missed."
Pink: "Whitney was the reason many of us do what we do."