The girls - Perrie Edwards, Jesy Nelson, Leigh-Anne Pinnock and Jade Thirlwall - remain the one and only group to win The X Factor, triumphing in 2011.
Not only did they defy the odds to be crowned champions, they've managed to post continued success year after year.
2015 proved their best yet with a Number 1 single, top selling album and two BRIT award nominations.
This year they're on tour and kicked off the performances at Cardiff Arena, wowing with a whole host of tracks.
The girls perfected songs from their three albums and covered a variety of hits from other artists including Beyonce and Justin Bieber.
Fans were not disappointed with @anonymousblog98 writing on Twitter: "Wow. What a night! Everyone who's going to the tour get ready to be blown away @LittleMix #LittleMixGetWeirdTour because that was fantastic!"
@bamitskate agreed: "Would just like to say well done to @LittleMix for putting on a phenomenal first show in Cardiff, absolutely smashed it!"
Most dates now sold out (sorry not sorry) but you may be able to pick up a few tickets still HERE if you're lucky.
Little Mix Get Weird 2016 tour set list
Change Your Life
Secret Love Song
Crazy In Love, Fester Skank, Where Are U Now, Ring The Alarm
How Ya Doin’?
Love Me Like You
MAIN PIC CREDIT: @bamitskate on Twitter