Mercy Shawn Mendes
30 November 2011, 17:17
Watch both acts talk about their contribution to the track.
JLS and One Direction feature in a new behind the scenes film showing the making of the video for this year's The X Factor charity single.
The track, 'Wishing On A Star', was released this month after both acts and this year's The X Factor finalists performed the song on the show.
In the video, which you can watch below, JLS described the video shoot as a "special day" because proceeds from the song will go to charity.
The Little Mix girls added: "It's been so much fun being on set and being in a music video. It doesn't feel real. We got to do it with JLS and One Direction as well – it's been really awesome."
The final video for 'Wishing On A Star' was released over the weekend.
On Sunday (27th November), the show's 15 finalists took to the stage to sing their cover of Rose Royce's classic alongside One Direction and JLS.
Watch the behind the scenes 'Wishing On A Star' video below.