Little Mix Perrie Edwards, Jesy Nelson, Leigh Pinnock and Fade Thirwall
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Next Little Mix Slideshow: Little Mix's radio tour - Sheffield United Kingdom - Thursday 11th June 2015
Many ticket-holders couldn't get into the O2 Arena show on Tuesday night (September 19th) because they didn't bring photo ID to match their booking.
An album re-release, a new song and a documentary mark the singer's legacy this year.
The actor plays the titular hero in the forthcoming adaptation.