Félicité Tomlinson died after of a heart attack after 'accidentally overdosing' on Cocaine, Xanax and Oxycodone, an inquest head.
The younger sister of One Direction star Louis Tomlinson died suddenly on March 13 after collapsing at her West London apartment at the age of 18.
Her horrified school friend Zainab Mohammed found her lifeless body in bed after they had bought and taken cocaine the night before while she was staying over.
Ambulance crews rushed to the address, along with an experienced paramedic and a single responder medic, but despite extensive efforts, Félicité could not be resuscitated and was pronounced dead at the scene.
A Coroner ruled that Félicité died of “misadventure” after taking a "perfect storm" of drugs.
Ms Mohammed initially denied taking drugs but later admitted to police that she found her friend with her “lips whiteish” shortly after 12 noon and called a friend who told her to dial 999.
The Coroner said: “You then say that both you and Fizz did lines of cocaine on the night of March 12th.
"A male friend came round, but he didn’t want any lines.
“You went to bed and saw Felicite do more lines, but you don’t know how many she did and then you fell asleep.
“You also said you had gone with her to buy cocaine on the night.”
Budding social media influencer Félicité had only recently moved to London from Doncaster to try and achieve her dream of becoming a fashion designer.
Her death was the second tragedy to hit the Tomlinson family in less than three years, as mum Johannah Deakin died of leukaemia in December 2016, age 43.
Johannah left behind seven children, including twins under the age of six.
In March this year, Louis released single Two Of Us as a tribute to his beloved mum.
The heartbreaking lyrics include the line: "You'll never know how much I miss you. The day that they took you, I wish it was me instead."
Heartbreakingly, Louis lost his sister Félicité in the same month he released the ballad.
A month later the grieving star spoke out to his fans to thank them for their support.
He tweeted in April: "Just wanted to thank everyone for their lovely words over the past couple of weeks. Back in the studio today to vocal something I wrote a few months ago. Sending you all loads of love x."
A family source previously told The Sun: "Felicite was an absolutely adored young woman who was loved by Louis and her whole family. They are all totally devastated, as you can imagine. She had so many friends and was such a positive happy person.
"It’s a massive loss to the world. She was a loveable, caring, bright, passionate, popular and beautiful young lady."
A friend of Félicité's told the Mirror that she had morphed from a "happy, confident, bubbly girl" to a "diet and exercise driven introvert" following her mother's death.
The said in the weeks leading up to her death, Félicité had noticeably dropped weight and her social media posts were becoming less focussed.
A friend of budding social influencer Félicité - who was just 16 when her mother died - told how she was rocked by the tragedy.
"When her mum died she really went into herself. She was never really the same. She started going out more but closed off her inner circle. I still saw her often but she was closed off. It seemed like she'd shut down her trust.
"She was very close to her mum. It was such a shock to her she was such a young girl," they said.
Midwife Johannah died in December 2016 leaving behind seven children; Louis, Lottie, Félicité and two sets of twins, Phoebe and Daisy and Ernest and Doris.
Budding designer Félicité was determined to get into university to study fashion, the pal added, moving down from Doncaster and throwing herself into social media to get noticed.
But the lively youngster was beginning to worry pals who said she became focused on fitness, resulting in weight loss.
She said: "Everyone noticed the weight loss but we put that down to exercise and strict diet because she wanted to move her Instagram forward so we all put it down to that. We thought she'd just taken it a bit too far.
"We'd ask her 'are you OK? We know everything can get a bit much. Her mum had died and it put her under the spotlight so we put it down to the pressure and stress.
"She had one of those figures where if she lost weight it was quite noticeable. Because she's quite an hourglass girl. When she lost the weight it was noticeable.
"With the figure that she naturally had if she was exercising and dieting it's going to be noticeable.
On hearing about her death, her friend said she wanted to pay tribute to her generous nature.
"It was a shock to hear she had died. She was someone that was so lovely and bubbly and happy and you don't expect to lose someone like that.
"She was a lovely gorgeous girl. The kind of person where if you were ever a bit sad she'd come and pick you up and make sure you were OK. She was more focused on other people than herself.
"She'd sooner check on you than check on herself. She was the type of person that was there for everyone. She was always such a loving and giving person."
