One Direction's Niall Horan has warned fans who are queuing up outdoors four days before their concert to "stay safe".

The British boy band - comprising of Horan, Harry Styles, Zayn Malik, Louis Tomlinson and Liam Payne - are currently promoting their second studio album Take Me Home and are heading to New York City next week for an appearance on the Today show.

On November 13 and November 14 the five-piece will perform outdoor concerts on Today at the show's Rockefeller Center headquarters and Horan took to Twitter to remind fans who are already queuing up to be aware of the cold weather.

“I hear some of you guys are camping outside the today show! Make sure u stay safe and warm! And see ya Tuesday (sic)."

One Direction are set to make an appearance on The X Factor this weekend, with a pre-recorded performance aired on tonight's episode.

Meanwhile, British girl group Little Mix have revealed their excitement ahead of their appearance on The X Factor results show tomorrow (November 11).

Band member Leigh -Anne Pinnock wrote on Twitter: "Just had our x factor rehearsals! Omgosh I'm so excited! Guess what mixers DNA is out Midnight tonight! Whose gona be gettin a copy? Leighx (sic)."