Tributes have been pouring in for Louis Tomlinson’s 18-year-old sister Felicite who has tragically passed away.

The teenager was found dead at her home in London on Wednesday afternoon.

It is understood that the 18-year-old suffered a cardiac arrest at her flat in Earl's Court, west London.

The former One Direction singer is said to be heartbroken by the untimely loss of his little sister.

According to The Sun, the Back For You singer has been left "devastated and distraught" by the death of his sister.

Felicite was described as "lovable, caring, bright and beautiful".

Louis lost his mum Johannah to leukaemia in December 2016. She was only 43-years-old.

His fans have been paying tribute to Louis and his family who have experienced too much tragedy in the past few years.

One wrote: “Two years after the death of his mother, Louis Tomlinson’s 18 year old sister Felicite has died of an unexplained heart attack. This is horrendous. How much tragedy can one family take?”

Another said: “my heart is BROKEN for félicité and the Tomlinson family. She was such a beautiful, kind and courageous girl.”

“Félicité Tomlinson was a beautiful soul who was nothing but kind to others around her. We are absolutely devastated and heartbroken for the family and everyone who is suffering from her loss,” one wrote.

Louis has pulled out of tonight’s Comic Relief show due to the untimely passing of his sister.

Our thoughts are with Louis and his family during this harrowing time.