Tributes have been paid to Amy Winehouse by fellow celebrities.
Many took to Twitter to express their shock and sadness after the singer was found dead at her north London flat this afternoon.
Sarah Brown, the wife of former prime minister Gordon Brown, wrote: "Just heard the sad news that Amy Winehouse has died.
"At only 27 what a terrible waste of a great talent. Sincere condolences to her family."
Singer and actress Kelly Osbourne wrote: "i cant even breath right now im crying so hard i just lost 1 of my best friends. i love you forever Amy & will never forget the real you!"
Television presenter Piers Morgan said on the website: "Such desperately sad news re Amy Winehouse.
"Supreme talent, terrible self-destructive addictive personality."
Fellow singer LeAnn Rimes wrote: "RIP Amy Winehouse. So sad to see such a talent gone and her life end in tragedy. This makes me terribly sad."
Other musicians also took to the website to pay their tributes.
Lily Allen wrote: "Its just beyond sad, there's nothing else to say. She was such a lost soul, may she rest in peace."
Singer Jessie J tweeted: "The way tears are streaming down my face. Such a loss."
Musician Professor Green added: "I really hope she's at peace now. I don't wanna hear any chat about it's her own fault, addiction is a powerful demon."
A tweet from pop band JLS read: "Times like this remind me why its so important to live life to the fullest!! Amy Winehouse you will be a LEGEND in all out hearts!"
Burlesque artist Dita Von Teese wrote: "Devastated. I spent extraordinary times with Amy. She sang for me once for hours, it was the most beautiful & touching thing. A huge loss."
Actress Demi Moore wrote on Twitter: "Truly sad news about Amy Winehouse. My heart goes out to her family. May her troubled soul find peace."
DJ Chris Moyles added: "Shocking terrible sad news about Amy Winehouse. Stunned. Thoughts go out to her friends and family."
Chef Jamie Oliver wrote: "Such a terrible shame to loose Amy winehouse such a talent, such a waste, raw talent."
Presenter Davina McCall wrote: "Amy Winehouse found dead at her home. So very very sad. A huge talent."
Television personality Katie Price wrote: "Omg how sad Amy Winehouse been found dead tragic. My thoughts are with her family xxxx."
Radio 1 DJ Edith Bowman wrote: "Can't quite get my head round the news about Amy, such a talent, such a sad day, such a loss. RIP Amy x."
Comedian Bill Bailey, a panellist on Never Mind The Buzzcocks, on which Winehouse once appeared, wrote: "Poor Amy. She was a great guest on Buzzcocks, funny + outrageous. And a great talent. What a terrible waste."
Sports presenter Gabby Logan added: "So sad to hear about Amy Winehouse. Such an incredible talent. RIP."
Rolling Stone Ronnie Wood was dedicating his show on Absolute Radio this evening to Winehouse, and also tonight's reunion performance by his former group The Faces in Hurtwood, Surrey.
He said: "It's a very sad loss of a very good friend I spent many great times with."
Producer Salaam Remi, who worked on Winehouse's albums Frank and Back To Black, wrote on Twitter: "Very Very Sad Day. Just lost a Great Friend and a Sister."
He added: "RIP my baby SiS Cherry Winehouse. Love ya always."