Representatives for UK boyband One Direction have vowed to take action after an imposter set up a charity web page in the name and likeness of member Niall Horan.

An unknown person created a Facebook page claiming to be the Irish heartthrob and a message posted to the site encouraged fans to 'like' it in order to raise money for sick children.

The post claimed that if 100,000 people 'liked' the page, a generous donation of $100,000 (£62,500) would be given to a children's hospital in Horan's name.

A spokesperson for One Direction has explained that the Facebook page has nothing to do with either the group or with Horan individually, and it will be removed:

"Yes, I'm afraid this is not Niall unfortunately. We will have Facebook shut this down."

Meanwhile, the singer took to his official Twitter page earlier today (December 24) and wished Louis Tomlinson a great birthday: "Massive HAPPY BIRTHDAY to one of my best friends @Louis_Tomlinson 21 today! Have a great time buddie and I will see you in the new year!"

Watch the lads perform 'Kiss You' on X Factor USA below: