Louis Tomlinson's 18-year-old sister, Félicité Tomlinson, has died, Billboard has confirmed.
The fashion designer and model collapsed from a heart attack in her West London studio apartment around lunchtime on Wednesday. An ambulance was called, but paramedics were unable to revive her and Félicité was pronounced dead at the scene.
The influencer, known as "Fizzy," was planning to publish a book of her poetry. In October, she revealed she had been suffering from sciatica, extreme back pain due to a nerve irritation.