Pixie Geldof, Peaches Geldof

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Understandably, Pixie Geldof is in no mood to party.

The British model and TV star has canceled her scheduled DJ set at the Coachella Valley Music & Arts Festival in California in the wake of her older sister Peaches Geldof's death in London on Monday, E! News confirms.

Pixie had planned to spin at the Old Navy Oasis event. The two-weekend festival kicks off Friday.

An event rep said that Nick Grimshaw, a close friend of Pixie's, is also no longer planning to attend, while Hannah Bronfman is still slated to deejay and Young the Giant will perform.

Fashionista Alexa Chunghas also reportedly canceled a DJ gig at a Jimmy Choo party and other plans in order to be more available for Pixie. Chung and Grimshaw were spotted having dinner together in L.A. last night. Pixie had been in town but immediately flew to the U.K. to be with family after Peaches died.

The only Geldof sibling to publicly comment on Peaches' death was older sister Fifi, who wrote on Instagram yesterday along with a photo of them as children, "‘My beautiful baby sister. Gone but never forgotten. I love you, Peaches x."

Irish musician and Live Aid/Live 8 cofounder Bob Geldof said in a statement following his daughter's death that the family was "beyond pain."

Peaches "was the wildest, funniest, cleverest, wittiest and the most bonkers of all of us," he said. "Writing 'was' destroys me afresh. What a beautiful child. How is this possible that we will not see her again? How is that bearable?"

An autopsy conducted today in England proved inconclusive as far as cause of death goes pending the results of further tests.

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