Zip yourself up, Justin! Bieber flies low as he suffers a wardrobe malfunction on stage

By GEORGINA LITTLEJOHN Flying low: Justin Bieber seemed unaware that his fly was undone as he came on stage at the Liverpool Echo Arena last nightAfter spending the day trapped inside his hotel, you'd have thought that Justin Bieber would have had plenty of time to go over his tour costumes.But it would seem that in his over-excitement to leave his suite and get on stage, he forgot to adjust