Whitney Houston passed away Saturday in her Beverly Hills Hotel room, her rep confirmed to the Associated Press. She was 48.
Celebrities -- like her fans -- expressed shock and sadness after her death.
Houston's mentor, Clive Davis, took the stage at his pre-Grammy Awards party on Saturday night, despite the sad circumstances.
"Whitney would have asked that the music go on. And her family said the show should go on," Davis said after taking the stage.
However, it's rumored that Houston's body is still in her room at the hotel.
"While Whitney Houston body is still in her room on the 4th floor Clive Davis's party is going on in the ballroom. Doesn't feel right to me," gossip columnist Rob Shuter tweeted.
Fellow singer (and sometimes collaborator) Mariah Carey reacted to Houston's death with a sad Twitter statement.
"Heartbroken and in tears over the shocking death of my friend, the incomparable Ms. Whitney Houston," she tweeted. "She will never be forgotten as one of the greatest voices to ever grace the earth."
Carey's husband, Nick Cannon, followed up with a message of his own.
"Tell our loved ones how much we love them while they're still here. I wish I could've told Whitney how great she was one last time."
Ryan Seacrest put on his reporter hat to talk about Houston's death.
"At Grammys rehearsal hearing Whitney Houston has passed away at 48. Everyone here is absolutely stunned," he tweeted. Later, he confirmed that Jennifer Hudson will perform a tribute to Houston at Sunday night's Grammy Awards.
"Shortly after news broke, grammy producers reached out to jennifer hudson to sing whitney tribute, she's now confirmed...plans in motion..."
Houston's ex-husband, Bobby Brown, took the stage with New Edition Saturday night in Memphis. However, he was obviously heartbroken.
"I love you, Whitney!" he sobbed from the stage.
Justin Bieber added his thoughts to Twitter.
"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."
Fellow R&B singer expressed her sadness over Houston's death with a series of tweets.
"My heart is weeping ... RIP to the Legendary Diva & Icon Whitney Houston!!!!! Such an incredible influence over music as a whole!" she wrote.
"She's paved the way for every single singer in the music industry. Iconic, legendary, innovating, amazing, humble ... 1 the best in the world."
In a sad coincidence, Glee star Amber Riley will perform a Houston song on the show this week.
"I can't believe you're singing "I will always love you" this Tuesday on #Glee," Lea Michele tweeted to her co-star.
"I'm glad we get to pay tribute to her," Riley tweeted back.
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