Niall Horan pays tribute to One Direction fans

Singer #NiallHoran has paid tribute to One Direction fans.

After his bandmates #HarryStyles and #LouisTomlinson took to Twitter to celebrate six years since the group -- which also features Liam Payne -- was formed on the British "The X Factor", Horan shared his own message with fans, reports femalefirst.co.uk.

"Six years. Wow! As Louis touched in his message, each one of you have played in a part in changing lives," Horan wrote. 

"You are the best fans in the world as you know. Thank you so much for everything so far," he added. 

Earlier, One Direction's official account shared a video of Tomlinson, in which he said: "I just wanted to film a little message to say thank you, because you guys are incredible". 

Styles wrote: "Six years. I have no idea how to say thank you for all your support. For everything you are, and everything you've done. Thank you". 

Tomlinson's mother, Johannah Deakin, shared the first photograph she took of the boy band -- which originally also featured Zayn Malik -- and tweeted: "Six beautiful years. Thank you to all you lovely people that have been just amazing."