The elder sister of Peaches Geldof paid tribute to the 25-year-old mother-of-two as it was confirmed that a post-mortem examination will be carried out tomorrow to establish what caused her sudden death.
Fifi Trixibelle Geldof posted a picture on Instagram of the two of them together when they were young children and wrote: ''My beautiful baby sister.... Gone but never forgotten. I love you Peaches x.''
Ms Geldof was found dead at her home in Wrotham, Kent, yesterday after officers were called "following a report of concern for the welfare of a woman", a Kent Police spokesman said.
A Kent County Council spokesman said Ms Geldof's body has been transferred to Darent Valley Hospital, Dartford, where the examination will take place tomorrow.
A coroner will open an investigation after the results of the initial post-mortem examination have been received.
A decision on whether to hold an inquest will be made depending on the final results of the post mortem, which could take several weeks.
The police spokesman said : "Officers were called to the 25-year-old's home in Fairseat Lane, Wrotham at 1.35pm on Monday April 7 2014. Peaches was pronounced dead at the scene.
"The death is being treated as a non-suspicious, but an unexplained sudden death.
"Officers are working to establish the circumstances and will be compiling a report of their findings for the coroner."
Ms Geldof was a prolific tweeter and the final message she sent on Sunday was a picture of her as a child with her mother, with the message "me and my mum".
She had two young sons with her second husband, musician Tom Cohen.
Shortly after news of the tragic death broke, Ms Geldof's father, Bob, released a touching tribute in which he relayed how the family were suffering "beyond pain".
He said: "She was the wildest, funniest, cleverest, wittiest and the most bonkers of all of us.
"Writing 'was' destroys me afresh. What a beautiful child. How is this possible that we will not see her again? How is that bearable?
"We loved her and will cherish her forever. How sad that sentence is.
"Tom and her sons Astala and Phaedra will always belong in our family, fractured so often, but never broken."
The statement was signed Bob, Jeanne, Fifi, Pixie and Tiger Geldof.
Cohen said: "My beloved wife Peaches was adored by myself and her two sons Astala and Phaedra and I shall bring them up with their mother in their hearts every day. We shall love her for ever."
Ms Geldof was just 11 years old when her mother Paula Yates, died from an accidental heroin overdose in 2000, aged 41.
Yates divorced Bob Geldof in 1996 after forming a relationship with INXS frontman Michael Hutchence.
Hutchence was found dead in a hotel room in Sydney, Australia, in 1997, and Yates went on to lose custody of the three daughters she had with Geldof - Peaches, Pixie and Fifi - the following year.
Bob Geldof later adopted Yates and Hutchence's daughter Heavenly Hiraani Tiger Lily.
Ms Geldof's oldest son Astala is 23 months old, while 11-month-old Phaedra was born on what would have been her mother's 54th birthday.
Ms Geldof was 19 when she married US musician Max Drummey at the Little White Wedding Chapel in Las Vegas in August 2008. The couple announced that they had decided to split amicably in February 2009 before divorcing in 2011.
Ms Geldof married Cohen, lead singer of south-east London band SCUM, in September 2012 at the church in Davington, Kent, where her parents married 26 years earlier. It was also where her mother's funeral was held.
A host of celebrities including Phillip Schofield, Holly Willoughby, Ellie Goulding, Simon Cowell and Lily Allen paid tribute.
Model Daisy Lowe posted a picture of a broken heart on Twitter.