Louis Tomlinson's One Direction Sister, Dead From Heart Attack, at 18

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Louis TomlinsonThe teenage sister died of a heart attack … TMZ confirmed.

18 years old Felicity Tomlinson died Wednesday in his studio in London. She collapsed as a result of a heart attack and someone in the apartment called for an ambulance … but after the paramedics tried to revive her, she was declared dead on the scene.

Sources close to the family told TMZ that Félicité had absolutely no warning signs and no history of heart trouble. She has, however, suffered from sciatica.

In January, Félicité published on social networks that she stopped drinking and smoking cigarettes.

Louis and Felicite were extremely close and saw each other regularly when he was in London.

Felicity was a fashion designer and had over one million followers on Instagram. It is obvious from her Insta, she was heavy in physical form. She planned to publish a book of her own poetry.

She was one of 7 brothers and sisters; Louis is the oldest.

Louis has just released a performance on a BBC charity show, Comic Relief. The show was scheduled to air Friday night, but Louis was obviously to withdraw.

We are told that Louis is with his family right now and that he is devastated. The singer of One Direction lost her mother to cancer in December 2016 when she was only 43 years old. He recently released a song called "Two of Us" about him and his mother. The lyrics include: "You will never know how much I miss you / the day they took you / I would like it to be me instead".

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