X Factor stars Little Mix have released an acoustic cover of 'We Are Young' to celebrate their birthday.
The group - Perrie Edwards, Jesy Nelson, Leigh-Anne Pinnock and Jade Thirlwall - made history as the first group to win The X Factor last year.
The girls were put together at bootcamp this week last year, having originally failed to make it through to judges' houses at solo artists.
Originally called Rhythmix, the girls impressed Tulisa at her home in Greece and went on to wow the public during the live shows to make the final.
Little Mix release their new single 'Wings' next week.
Watch the girls' cover of We Are Young below...