Little Mix
The girls were not messing about as they debuted their new single.
Little Mix won the competition in 2011.
We don't think they're fans of Honey G.
We don't know about you, but we can't wait to hear 'Shout Out To My Ex'.
'Hope she ain’t fakin’ it like I did, babe.'
Yes, Biebs' miming is one of them.
Can we go back now, please?
She looks SO different, and we love it.
Last year was a lot to live up to.
Past winners have had mixed results with their first post-'X Factor' release?