Lily Allen has led tributes to Peaches Geldof.
The TV personality and DJ, 25 - who has sons, Astala, 23-months, and Phaedra, 11-months, with husband Tom Cohen - was found dead at their family home in Kent, England on Monday afternoon.
The Hard Out Here hitmaker was among dozens of celebrities to express her condolences on Twitter, writing: "My thoughts are with the Geldof's at this awful time. I hope they get to grieve in peace. Peaches, rest in peace gorgeous girl."
The X Factor judge Sharon, whose husband, Ozzy Osbourne, and their children Jack and Kelly Osbourne have all battled addictions in the past, wrote on Twitter: "Devastated about @peaches_g. Sending condolences & respect to the Geldof family. It's unimaginable what they must be going through right now"
Danny Jones from McFly tweeted: "So so sad to hear about Peaches Geldof.
TV personality Myleene Klass wrote: "The news of beautiful Peaches is utterly devastating, God bless her babies. RIP mama xxx"
Topshop heiress and designer Chloe Green tweeted: "Such sad news, my heart breaks for her beautiful children RIP Peaches, a wonderful soul, Let us all allow her family to grieve in peace"
Burn hitmaker Ellie Goulding wrote: "Even if you think you've got it all figured out, some things still can't be explained or understood. Two beautiful children. RIP Peaches"
British singer Sam Smith tweeted: "So so sad about Peaches Geldof. Thoughts with all of her family"
Model Daisy Lowe, who is close friends with Peaches' sister Pixie Geldof, simply shared a picture of a broken heart.
The second eldest daughter of Irish rocker Bob Geldof, Peaches was 11 when her mother Paula Yates died from a heroin overdose in 2000.
In her last social media message, Peaches posted a picture of her as a child with her mother.
Her death is currently being treated as unexplained and sudden by police.
- Bang! Showbiz