Justin Bieber Moons His Crowd!

Justin Bieber has returned back to doing his 'Believe' tour after taking a break. Kicking his tour off in Singapore he gave the crowd a sight to remember as he was almost mooning them.
Justin is no stranger to being shirtless as we all know, but how about being pantless? The heartthrob teen almost lost his pant after they slipped dangerously low while performing!

We hope Justin Bieber fans like white underwear because that's what they saw a lot of at his Singapore concert.
The singer was jumping up and down, enjoying the performance, but has to hold his leather harem pants up in fear of them slipping off.

Although his backside wasn't completely exposed, fans definitely got a big eyeful of the bak of his briefs and outline of his bum!