Celebrity tributes pour in for Louis Tomlinson's sister Félicité as she dies suddenly aged just 18

LONDON, ENGLAND – JULY 17: Louis Tomlinson during The X Factor 2018 launch at Somerset House on July 17, 2018 in London, England. (Photo by Mike Marsland/Mike Marsland/WireImage)

Celebrities have been sending their condolences to One Direction star Louis Tomlinson, after the sudden death of his 18-year-old sister, Félicité, due to a heart attack. Their mother, Johannah Deakin, died in December 2016, aged only 43.

James Corden and Olly Murs are just two of the many celebrities to pay tribute to the One Direction star, who is only 27 himself.

Olly Murs, who, like Louis, found fame on The X Factor, tweeted: “Absolutely heartbreaking hearing the news of Louis sister Félicité sending my love to him & all his family right now! Awful news.”

Read more: Louis Tomlinson ‘pulls out of Comic Relief performance’ following the death of his sister

James Corden said: “Such incredibly sad news today. You’re not on your own in this @Louis_Tomlinson So many people are pulling for you and your family right now x”

Westlife singer Brian McFadden tweeted: “This is so sad. This boy has had it tough x”

Louis Tomlinson has reportedly cancelled his appearance on Comic Relief following the death of his sister.

A source close to the family commented: “Félicité was an absolutely adored young woman who was loved by Louis and her whole family. 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.”

In the aftermath of the tragic news, Tomlinson has reportedly pulled out of his performance during the televised fundraiser for Comic Relief.

Read more: Louis Tomlinson released heart-breaking new track in honour of his mum

Louis has poured his heart in to a song about his mum and dealing with grief – after his mother died from cancer in 2016.

The one Direction star recently unveiled the poignant single Two Of Us  on Twitter, along with the words: “So excited to share this with you guys. #TwoOfUs is out now.”