We're so sad to report that Louis Tomlinson's sister, Félicité Tomlinson, has reportedly passed away at the young age of 18. The cause of her death is still to be confirmed, but it is reported to have been a suspected heart attack.
Tomlinson, who was a social media star in her own right with almost 1.3 million Instagram followers, was reportedly found unconscious at her apartment in Earls Court, West London on Wednesday, according to The Sun.
Thoughts and prayers are with the family at this tragic time.
A family source told The Sun: "Félicité was an absolutely adored young woman who was loved by Louis and her whole family".
A spokesperson for the Met said: "Police were called by the London Ambulance Service at 12.52pm to a residential address in SW5". At this stage the death is being treated as unexplained.
An ambulance was called to her home in Earls Court, London after she collapsed, and paramedics pronounced the 18 year old dead at the scene after attempting to revive her.
This heartbreaking news comes just two years after Louis lost his mum, Johannah, after a long battle with leukaemia.
The results of a full post-mortem examination will be released in days.