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 probably one of the most important parts of his outfit.The teenage pop sensation has forgotten to zip up the fly on his trousers, which gaped open as he came on stage at Liverpool's Echo Arena on Friday night. Justin, 17, seemed blissfully unaware of his wardrobe malfunction as he greeted the screaming 11,000-strong fans that had been waiting for their idol to arrive.And not only were they treated to a view of their pin-up in the flesh, but they also got a bit more than they bargained for. I've got it covered: Justin kept his hand strategically placed over his open zipper as he strutted his stuff for his screaming fansAnd as the singer gyrated and thrust some moves in their direction, he kept his hand over his crotch instead of trying to subtly turn round and quickly zip it up.Not that his fans seemed to care, as they screamed, cried and sang along with the pop star as he treated them to a setlist packed full of his hits including Baby, Never Say Never and his debut single One Time. Hello Liverpool! Sunglasses on, Justin bent over in his futuristic outfit to try and hide his open fly as he performed a dazzling setAnd joining in was WAG Alex Gerrard, who had brought her two young daughters Lilly-Ella, seven, and four-year-old Lexie along to the gig, but seemed to be enjoying it as much as them.It was Bieber's only date in the Merseyside city but he almost didn't make the concert after he was trapped in his hotel by hundreds of female fans who had converged outside the Hard Days Night hotel, hoping for a glimpse of their idol. Bieber fever: Alex Gerrard looked delighted as she took daughters Lilly-Ella and Lexie to the showThey crowded round all doors of the boutique hotel making it impossible for Bieber to leave his hotel room.And the Canadian teen was warned by police he could be arrested if he attempted to venture outside and would be charged with 'inciting a riot.' We love you, Justin! Hundreds of screaming fans converged outside the Hard Days Night hotel, trapping the star inside I'm up here! Justin greets his fans from his hotel room balcony and makes a heart sign with his handsHowever, he was able to negotiate a brief appearance on his hotel suite balcony to greet the screaming fans.Justin travels to London tonight to play three dates of the My World Tour at the O2 Arena. Everybody stand back: Police had to make a barricade to force the fans back from the front door so Justin could leave for his concert Justin Bieber Liverpool March 11thsource: dailymail
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 probably one of the most important parts of his outfit.The teenage pop sensation has forgotten to zip up the fly on his trousers, which gaped open as he came on stage at Liverpool's Echo Arena on Friday night. Justin, 17, seemed blissfully unaware of his wardrobe malfunction as he greeted the screaming 11,000-strong fans that had been waiting for their idol to arrive.And not only were they treated to a view of their pin-up in the flesh, but they also got a bit more than they bargained for. 
I've got it covered: Justin kept his hand strategically placed over his open zipper as he strutted his stuff for his screaming fansAnd as the singer gyrated and thrust some moves in their direction, he kept his hand over his crotch instead of trying to subtly turn round and quickly zip it up.Not that his fans seemed to care, as they screamed, cried and sang along with the pop star as he treated them to a setlist packed full of his hits including Baby, Never Say Never and his debut single One Time. 
Hello Liverpool! Sunglasses on, Justin bent over in his futuristic outfit to try and hide his open fly as he performed a dazzling setAnd joining in was WAG Alex Gerrard, who had brought her two young daughters Lilly-Ella, seven, and four-year-old Lexie along to the gig, but seemed to be enjoying it as much as them.It was Bieber's only date in the Merseyside city but he almost didn't make the concert after he was trapped in his hotel by hundreds of female fans who had converged outside the Hard Days Night hotel, hoping for a glimpse of their idol. 
Bieber fever: Alex Gerrard looked delighted as she took daughters Lilly-Ella and Lexie to the showThey crowded round all doors of the boutique hotel making it impossible for Bieber to leave his hotel room.And the Canadian teen was warned by police he could be arrested if he attempted to venture outside and would be charged with 'inciting a riot.' 
We love you, Justin! Hundreds of screaming fans converged outside the Hard Days Night hotel, trapping the star inside 
I'm up here! Justin greets his fans from his hotel room balcony and makes a heart sign with his handsHowever, he was able to negotiate a brief appearance on his hotel suite balcony to greet the screaming fans.Justin travels to London tonight to play three dates of the My World Tour at the O2 Arena. 
Everybody stand back: Police had to make a barricade to force the fans back from the front door so Justin could leave for his concert Justin Bieber Liverpool March 11thsource: dailymail