Little Mix cover fun.'s 'We Are Young' - watch video
The X Factor winners - Perrie Edwards, Jesy Nelson, Leigh-Anne Pinnock and Jade Thirlwall - posted their version of the fun. track online.
'We Are Young' has reached number one across the globe, including in the UK, Ireland and the US.
The song also set a new download record in the US after achieving sales of over 300,000 every week since its release.
Little Mix release their new single 'Wings' on August 25 and their debut album later in the year.
''We wrote most of the songs ourselves and there are a few surprises," Nelson said of the LP.
"A couple of the tracks are dark and spooky. I want us to be the next Spice Girls, I hope we can do for girls what they did for us."