Félicité Tomlinson, the younger sister of One Direction singer and X Factor judge Louis Tomlinson, has died at the age of 18.
The model, Instagram star and aspiring fashion designer died at her flat in west London.
Emergency services were called to the address following reports of a cardiac arrest, according to BBC News.
Louis Tomlinson has cancelled a scheduled appearance on Comic Relief this Friday.
A statement from Scotland Yard said that police were called by London Ambulance Service at 12.52pm following reports of a cardiac arrest.
“A female believed to be aged 18 was pronounced dead at the scene,” the statement said. “A post-mortem examination will take place in due course.”
The news comes just two years after Félicité and former One Direction star Louis lost their mother Johannah to leukaemia.
27-year-old Louis Tomlinson has now pulled out of performing on BBC1 fundraiser Comic Relief.
Louis, the eldest of seven siblings, had been scheduled to perform his new single Two Of Us, a tribute to his late mother.
Speaking about the new release last week, he explained to BBC Radio 1, “It was something I needed to get off my chest.
“I used to lean on my mum for a lot of things – anytime I needed advice on something she would be the first call I made.”
He added that playing the song for the rest of his family was “tough” as he didn’t want them to “get caught up in their sadness.”
Louis has received an outpouring of support from fans and celebrities alike.
Presenter James Corden wrote on Twitter, “Such incredibly sad news today. You’re not on your own in this Louis Tomlinson So many people are pulling for you and your family right now.”
Singer Charlie Puth also expressed his condolences.
“Prayers to Louis Tomlinson. I can’t imagine how hard it is right now. Love to you brother I’m so sorry and my prayers are with you,” he said.