‘I was in the UK for 20 hours’: Niall on supporting band mate Louis

We have to say, we were pretty delighted that all the One Direction lads showed up to the X Factor to support their band mate, and friend, Louis Tomlinson.

Louis took to the stage on Saturday night to sing his debut song, Just Hold On, in tribute to his late mother, Johannah Deakin, who passed away last Wednesday.

The 1D lads were all there in the audience to support him and even went out with him afterwards in London.

However, only a few hours later, Niall Horan was back in the US, and when reporters asked him why the quick visit, Niall simply said he had "a very good reason."

As the Mullingar man stepped back on US soil, a reporter shouted to him, "Weren't you in the UK like an hour ago?"

Niall replied, "Yeah, I flew home for… I was in the UK for twenty hours. For a very good reason."

A source who was behind the scenes at the X Factor told The Sun: “It was an incredible and special thing for them to get back together as a four and be like brothers again. 

“Niall flew in overnight from New York so he could be there and Liam came from Los Angeles. It was that important they were together. 

“They were all in Louis’ dressing room together and it was obviously an incredible emotional night," they added.